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  • SQLRally and SQLRally - Session material

    - by Hugo Kornelis
    I had a great week last week. First at SQLRally Nordic , in Stockholm, where I presented a session on how improvements to the OVER clause can help you simplify queries in SQL Server 2012 enormously. And then I continued straight on into SQLRally Amsterdam , where I delivered a session on the performance implications of using user-defined functions in T-SQL. I understand that both events will make my slides and demo code downloadable from their website, but this may take a while. So those who do not...(read more)

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  • Using Hadooop (HDInsight) with Microsoft - Two (OK, Three) Options

    - by BuckWoody
    Microsoft has many tools for “Big Data”. In fact, you need many tools – there’s no product called “Big Data Solution” in a shrink-wrapped box – if you find one, you probably shouldn’t buy it. It’s tempting to want a single tool that handles everything in a problem domain, but with large, complex data, that isn’t a reality. You’ll mix and match several systems, open and closed source, to solve a given problem. But there are tools that help with handling data at large, complex scales. Normally the best way to do this is to break up the data into parts, and then put the calculation engines for that chunk of data right on the node where the data is stored. These systems are in a family called “Distributed File and Compute”. Microsoft has a couple of these, including the High Performance Computing edition of Windows Server. Recently we partnered with Hortonworks to bring the Apache Foundation’s release of Hadoop to Windows. And as it turns out, there are actually two (technically three) ways you can use it. (There’s a more detailed set of information here: http://www.microsoft.com/sqlserver/en/us/solutions-technologies/business-intelligence/big-data.aspx, I’ll cover the options at a general level below)  First Option: Windows Azure HDInsight Service  Your first option is that you can simply log on to a Hadoop control node and begin to run Pig or Hive statements against data that you have stored in Windows Azure. There’s nothing to set up (although you can configure things where needed), and you can send the commands, get the output of the job(s), and stop using the service when you are done – and repeat the process later if you wish. (There are also connectors to run jobs from Microsoft Excel, but that’s another post)   This option is useful when you have a periodic burst of work for a Hadoop workload, or the data collection has been happening into Windows Azure storage anyway. That might be from a web application, the logs from a web application, telemetrics (remote sensor input), and other modes of constant collection.   You can read more about this option here:  http://blogs.msdn.com/b/windowsazure/archive/2012/10/24/getting-started-with-windows-azure-hdinsight-service.aspx Second Option: Microsoft HDInsight Server Your second option is to use the Hadoop Distribution for on-premises Windows called Microsoft HDInsight Server. You set up the Name Node(s), Job Tracker(s), and Data Node(s), among other components, and you have control over the entire ecostructure.   This option is useful if you want to  have complete control over the system, leave it running all the time, or you have a huge quantity of data that you have to bulk-load constantly – something that isn’t going to be practical with a network transfer or disk-mailing scheme. You can read more about this option here: http://www.microsoft.com/sqlserver/en/us/solutions-technologies/business-intelligence/big-data.aspx Third Option (unsupported): Installation on Windows Azure Virtual Machines  Although unsupported, you could simply use a Windows Azure Virtual Machine (we support both Windows and Linux servers) and install Hadoop yourself – it’s open-source, so there’s nothing preventing you from doing that.   Aside from being unsupported, there are other issues you’ll run into with this approach – primarily involving performance and the amount of configuration you’ll need to do to access the data nodes properly. But for a single-node installation (where all components run on one system) such as learning, demos, training and the like, this isn’t a bad option. Did I mention that’s unsupported? :) You can learn more about Windows Azure Virtual Machines here: http://www.windowsazure.com/en-us/home/scenarios/virtual-machines/ And more about Hadoop and the installation/configuration (on Linux) here: http://en.wikipedia.org/wiki/Apache_Hadoop And more about the HDInsight installation here: http://www.microsoft.com/web/gallery/install.aspx?appid=HDINSIGHT-PREVIEW Choosing the right option Since you have two or three routes you can go, the best thing to do is evaluate the need you have, and place the workload where it makes the most sense.  My suggestion is to install the HDInsight Server locally on a test system, and play around with it. Read up on the best ways to use Hadoop for a given workload, understand the parts, write a little Pig and Hive, and get your feet wet. Then sign up for a test account on HDInsight Service, and see how that leverages what you know. If you're a true tinkerer, go ahead and try the VM route as well. Oh - there’s another great reference on the Windows Azure HDInsight that just came out, here: http://blogs.msdn.com/b/brunoterkaly/archive/2012/11/16/hadoop-on-azure-introduction.aspx  

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  • Andrejus Keeps Cranking Out the Tips

    - by steve.muench
    I've been working on designing and implementing a new set of features for an upcoming Oracle ADF release for the past several months (and several more to come) and this has put a real limit on the time I have available for helping external customers and internal teams, as well as the time I have for blogging. Thankfully, the ADF community at large has many other voices they can listen to for tips and techniques. One I wanted to highlight specifically today is Andrejus Baranovskis' blog, which is steadily building up a high-quality archive of downloadable ADF examples based on his real-world consulting experiences, each with a corresponding explanatory article. If you're not already subscribed to Andrejus' blog, I highly recommend it. Keep up the great work, Andrejus!

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  • SSAS DMVs: useful links

    - by Davide Mauri
    From time to time happens that I need to extract metadata informations from Analysis Services DMVS in order to quickly get an overview of the entire situation and/or drill down to detail level. As a memo I post the link I use most when need to get documentation on SSAS Objects Data DMVs: SSAS: Using DMV Queries to get Cube Metadata http://bennyaustin.wordpress.com/2011/03/01/ssas-dmv-queries-cube-metadata/ SSAS DMV (Dynamic Management View) http://dwbi1.wordpress.com/2010/01/01/ssas-dmv-dynamic-management-view/ Use Dynamic Management Views (DMVs) to Monitor Analysis Services http://msdn.microsoft.com/en-us/library/hh230820.aspx

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  • 2011 PASS Board Applicants: Sri Sridharan

    - by andyleonard
    Introduction I am interviewing 2011 PASS Board Nominee Applicants. As listed on the PASS Board Elections site the applicants are: Rob Farley Geoff Hiten Adam Jorgensen Denise McInerney Sri Sridharan Kendal Van Dyke I'm asking everyone the same questions and blogging the responses in the order received. Sri Sridharan is next up: Interview With Sri Sridharan 1. What's your day job? I work for VHA as a Data Architect. I am responsible for 3 main goals. · Responsible for Data Governance initiatives in...(read more)

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  • Recap of SQLSat #65

    - by RickHeiges
    Since the MVP Summit was this past week, I decided to head out to the West Coast a little earlier and attended SQLSat#65. I did not submit to speak at the conference, but I did help out some by introducing speakers in one of the rooms and a few other places where I could. I started out in a session by Scott Klein about SQLAzure. BTW, Microsoft now has a 30-day offer for SQL Azure where you do not need to provide Credit Card info. I then sat in for a while on Alan Hirt's Session on building a Cluster...(read more)

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  • Running 32-bit SSIS in a 64-bit Environment

    - by John Paul Cook
    After my recent post on where to find the 32-bit ODBC Administrator on a 64-bit SQL Server, a new question was asked about how to get SSIS to run with the 32-bit ODBC instead of the 64-bit ODBC. You need to make a simple configuration change to the properties of your BIDS solution. Here I have a solution called 32bitODBC and it needs to run in 32-bit mode, not 64-bit mode. Since I have a 64-bit SQL Server, BIDS defaults to using the 64-bit runtime. To override this setting, go to the property pages...(read more)

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  • Back in Atlanta! Wed, Feb 9 2011

    - by KKline
    I always enjoy spending time with my friends from Atlanta, as well as meeting folks and making new friends. If you live in the Atlanta area, I hope you'll join me on the evening of Wednesday, February 9th, 2011. Details are at the Atlanta SQL Server user group website . It's common knowledge that I have a terrible memory for many things. However, one of the few things that my memory is usually really good at is remember names & faces (and remembering stories, but that is another story as well)....(read more)

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  • Cross-Browser Extension Installation now Possible with Opera and Google Chrome

    - by Akemi Iwaya
    People have been curious if there would be cross-browser compatibility for extensions due to Opera’s recent switch to the browser engine that Google Chrome uses. That question has now been answered. The OMG! Chrome! Blog has put together a nice tutorial on how to get cross-browser extension compatibility set up and working with your browser of choice. Screenshot courtesy of OMG! Chrome! Blog. While it is not surprising that the first steps in cross-browser extension compatibility have been taken, it will be interesting to see how it develops as the process is refined and further development occurs with the ‘new’ Opera. What are your thoughts on this? Is cross-browser extension compatibility really that important? Perhaps you feel that it does not matter? Let us know your thoughts in the comments!    

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  • Did You Know? What PreCon would I take if I were attending TechEd?

    - by Kalen Delaney
    TechEd starts in 3 weeks, and I'm not going to make it this year. I had very much wanted to visit New Orleans post-Katrina and see the recovery for myself. I attended a couple of TechEd's there many years ago, but my primary reason for visiting that fabulous city was because my daughter went to school there. She graduated from Tulane University in 1999, but it just so happened that every time TechEd was there, it was after school was over for the year, so I never got to combine my conference trip...(read more)

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  • The importance of Unit Testing in BI

    - by Davide Mauri
    One of the main steps in the process we internally use to develop a BI solution is the implementation of Unit Test of you BI Data. As you may already know, I’ve create a simple (for now) tool that leverages NUnit to allow us to quickly create Unit Testing without having to resort to use Visual Studio Database Professional: http://queryunit.codeplex.com/ Once you have a tool like this one, you can start also to make sure that your BI solution (DWH and CUBE) is not only structurally sound (I mean, the cube or the report gets processed correctly), but you can also check that the logical integrity of your business rules is enforced. For example let’s say that the customer tell you that they will never create an invoice for a specific product-line in 2010 since that product-line is dismissed and will never be sold again. Ok we know that this in theory is true, but a lot of this business rule effectiveness depends on the fact the people does not do a mistake while inserting new orders/invoices and the ERP used implements a check for this business logic. Unfortunately these last two hypotesis are not always true, so you may find yourself really having some invoices for a product line that doesn’t exists anymore. Maybe this kind of situation in future will be solved using Master Data Management but, meanwhile, how you can give and idea of the data quality to your customers? How can you check that logical integrity of the analytical data you produce is exactly what you expect? Well, Unit Testing of a DWH or a CUBE can be a solution. Once you have defined your test suite, by writing SQL and MDX queries that checks that your data is what you expect to be, if you use NUnit (and QueryUnit does), you can then use a tool like NUnit2Report to create a nice HTML report that can be shipped via email to give information of data quality: In addition to that, since NUnit produces an XML file as a result, you can also import it into a SQL Server Database and then monitor the quality of data over time. I’ll be speaking about this approach (and more in general about how to “engineer” a BI solution) at the next European SQL PASS Adaptive BI Best Practices http://www.sqlpass.org/summit/eu2010/Agenda/ProgramSessions/AdaptiveBIBestPratices.aspx I’ll enjoy discussing with you all about this, so see you there! And remember: “if ain't tested it's broken!” (Sorry I don’t remember how said that in first place :-)) Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Six Unusual Blogs I Like

    - by Bill Graziano
    I subscribe to and read over 100 SQL Server blogs every day.  I link to posts that I think are interesting.  I also read a fair number of non-SQL Server blogs.  Here are a few that I think are interesting. danah boyd. She is a researcher with Microsoft and writes about privacy, social media and teenagers.  I discovered her blog while looking for strategies to keep my personal and professional life separate.  (I haven’t found a good solution to that yet.)  Her stories of how teenagers use Facebook and other social media tools are fascinating. Clayton’s Web Snacks.  Steve Clayton works at Microsoft and has a variety of blogs out there.  This one focuses on … hmmm.  His latest posts are on graffiti, infographics, paper tweets, cartoons and slow motion videos.  It’s mostly visual and you never really know what you’ll get.  It’s always interesting though and I like what he posts.  It’s good creative stuff. Seth Godin.  Seth writes about Marketing.  I read him for motivation to get off my butt and get things done.  He’s a great motivator who encourages you to think big.  And do something! Ask the Pilot.  Patrick Smith is a commercial airline pilot writing about the airline industry.  He’s a great debunker of myths (no they don’t reduce oxygen in the cabin to keep you docile).  My favorite topics include the TSA, flying myths, airport reviews and flight delays. My old favorite flight blog used to be enplaned.  No one knew who wrote it.  It focused on the economics of the airline industry.  It was fascinating stuff.  One day it was gone.  The entire blog was deleted.  Someone tracked down some partial archives and put them online. The Agent’s Journal.  Jack Bechta is an NFL agent.  He writes about the business side of the NFL, the draft and free agency.  Lately he’s been writing about the potential lockout.  He has a distinct lack of hype which I find very refreshing.  xkcd.  I call this the comic for smart people.  A little math, some IT and internet privacy thrown in all make an unusual comic. Funny and intelligent.

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  • XMLPad – a new tool in my developer utility belt

    - by jamiet
    Yesterday I was on the lookout for a free tool that would help me write XPath statements. I put a shout out on Twitter and Johan Barnard replied saying : Give XMLPad a try http://www.wmhelp.com/xmlpad3.htm I’m sure there are legions of developers out there that know all about XMLPad but I had never heard about it so I suspect some of you reading haven’t either. Today I downloaded it to give it a run out and I gotta say – I love it. I only used it to do one thing –constructing an XPath expression to point to a particular Configuration definition in a .dtsx file- and it allowed me to do that with consummate ease. The feature I particularly loved was that, similar to Google Suggest, it showed me results from my expression as I typed. Here is a screenshot of my XPath expression to find (and just try saying this in a hurry) the value of a property whose DTS:Name attribute equals ‘ConfigurationString’ of a Configuration definition where the value of that Configuration definition’s property whose DTS:Name attribute equals ‘ObjectName’, equals ‘BIConfig My XPath expression: /DTS:Executable/DTS:Configuration[DTS:Property[@DTS:Name=’ObjectName’]=’BIConfig’]/DTS:Property[@DTS:Name=’ConfigurationString’] and believe me, there was no way I would have been able to come up with that without a tool to help me! So, an easy tip for you – if you need to write XPath expression download XMLPad for free from http://www.wmhelp.com/xmlpad3.htm and see what it can do for you. That’s all. Its now Friday evening and I’m shutting down and relaxing before heading to the big game at Twickenham tomorrow (yes, I have a ticket ). Have a good one! @Jamiet

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  • Merge Join component sorted outputs [SSIS]

    - by jamiet
    One question that I have been asked a few times of late in regard to performance tuning SSIS data flows is this: Why isn’t the Merge Join output sorted (i.e.IsSorted=True)? This is a fair question. After all both of the Merge Join inputs are sorted, hence why wouldn’t the output be sorted as well? Well here’s a little secret, the Merge Join output IS sorted! There’s a caveat though – it is only under certain circumstances and SSIS itself doesn’t do a good job of informing you of it. Let’s take a look at an example. Here we have a dataflow that consumes data from the [AdventureWorks2008].[Sales].[SalesOrderHeader] & [AdventureWorks2008].[Sales].[SalesOrderDetail] tables then joins them using a Merge Join component: Let’s take a look inside the editor of the Merge Join: We are joining on the [SalesOrderId] field (which is what the two inputs just happen to be sorted upon). We are also putting [SalesOrderHeader].[SalesOrderId] into the output. Believe it or not the output from this Merge Join component is sorted (i.e. has IsSorted=True) but unfortunately the Merge Join component does not have an Advanced Editor hence it is hidden away from us. There are a couple of ways to prove to you that is the case; I could open up the package XML inside the .dtsx file and show you the metadata but there is an easier way than that – I can attach a Sort component to the output. Take a look: Notice that the Sort component is attempting to sort on the [SalesOrderId] column. This gives us the following warning: Validation warning. DFT Get raw data: {992B7C9A-35AD-47B9-A0B0-637F7DDF93EB}: The data is already sorted as specified so the transform can be removed. The warning proves that the output from the Merge Join is sorted! It must be noted that the Merge Join output will only have IsSorted=True if at least one of the join columns is included in the output. So there you go, the Merge Join component can indeed produce a sorted output and that’s very useful in order to avoid unnecessary expensive Sort operations downstream. Hope this is useful to someone out there! @Jamiet  P.S. Thank you to Bob Bojanic on the SSIS product team who pointed this out to me!

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  • Windows Azure Emulators On Your Desktop

    - by BuckWoody
    Many people feel they have to set up a full Azure subscription online to try out and develop on Windows Azure. But you don’t have to do that right away. In fact, you can download the Windows Azure Compute Emulator – a “cloud development environment” – right on your desktop. No, it’s not for production use, and no, you won’t have other people using your system as a cloud provider, and yes, there are some differences with Production Windows Azure, but you’ll be able code, run, test, diagnose, watch, change and configure code without having any connection to the Internet at all. The best thing about this approach is that when you are ready to deploy the code you’ve been testing, a few clicks deploys it to your subscription when you make one.   So what deep-magic does it take to run such a thing right on your laptop or even a Virtual PC? Well, it’s actually not all that difficult. You simply download and install the Windows Azure SDK (you can even get a free version of Visual Studio for it to run on – you’re welcome) from here: http://msdn.microsoft.com/en-us/windowsazure/cc974146.aspx   This SDK will also install the Windows Azure Compute Emulator and the Windows Azure Storage Emulator – and then you’re all set. Right-click the icon for Visual Studio and select “Run as Administrator”:    Now open a new “Cloud” type of project:   Add your Web and Worker Roles that you want to code:   And when you’re done with your design, press F5 to start the desktop version of Azure:   Want to learn more about what’s happening underneath? Right-click the tray icon with the Azure logo, and select the two emulators to see what they are doing:          In the configuration files, you’ll see a “Use Development Storage” setting. You can call the BLOB, Table or Queue storage and it will all run on your desktop. When you’re ready to deploy everything to Windows Azure, you simply change the configuration settings and add the storage keys and so on that you need.   Want to learn more about all this?   Overview of the Windows Azure Compute Emulator: http://msdn.microsoft.com/en-us/library/gg432968.aspx Overview of the Windows Azure Storage Emulator: http://msdn.microsoft.com/en-us/library/gg432983.aspx January 2011 Training Kit: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=413E88F8-5966-4A83-B309-53B7B77EDF78&displaylang=en      

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  • Windows Azure Database (SQL Azure) Development Tip

    - by BuckWoody
    When you create something in the cloud, it's real, and you're charged for it. There are free offerings, and you even get free resources with your Microsoft Developer Network (MSDN) subscription, but there are limits within those. Creating a 1 GB database - even with nothing in it - is a 1 GB Database. If you create it, drop it, and create it again 2 minutes later, that's 2 GB of space you've used for the month. Wait - how do I develop in this kind of situation? With Windows Azure, you can simply install the free Software Development Kit (SDK) and develop your entire application for free - you need never even log in to Windows Azure to code. Once you're done, you simply deploy the app and you start making money from the application as you're paying for it. Windows Azure Databases (The Artist Formerly Known As SQL Azure) is a bit different. It's not emulated in the SDK - because it doesn't have to be. It's just SQL Server, with some differences in feature set. To develop in this environment, you can use SQL Server, any edition. Be aware of the feature differences, of course, but just develop away - even in the free "Express" or LocalDB flavors - and then right-click in SQL Server Management Studio to script objects. Script the database, but change the "Advanced" selection to the Engine Type of "SQL Azure". Bing. Although most all T-SQL ports directly, one thing to keep in mind is that you need a Clustered Index on every table. Often the Primary Key (PK) is a good choice for that.

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  • SQL Saturday #39 in NYC

    - by roman
    This weekend I will be speaking at the NYC SQL Saturday . The whole event was supposed to be BI focused but now the schedule shows a lot of non BI stuff as well. I will be presenting SQL Server 2008 Reporting Services Programming , one of my favorite topics to present on. It seems that the event if fully booked. I'll be coming down on my bike taking scenic roads through MA and CT so I will not make it to the speaker dinner. But the forecast looks good so I am pretty psyched to finally venture out...(read more)

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  • Commercial Software Development – presentation slide decks for DDD SouthWest 2.0

    - by Liam Westley
    Thanks to everyone who voted me onto the DDD SouthWest agenda, and a big thanks to all who attended the session and took the time to give feedback to rank me No.3 in the overall conference in presentation skills. There were some good feedback comments, which I'll try to make sure I take note of for future presentations. For those who came to the session, or even for those who were on one of the other tracks, I’ve uploaded the presentation for you to download.  I created a more simple, and smaller, PowerPoint without all the fancy animations and video clips, which is available as a compressed ZIP file,   http://www.tigernews.co.uk/blog-twickers/dddsw/commercialsoftwaredev-dddsw2.zip I also printed the presentation with speaker notes (which contain most of the information I was talking about) using PDFCreator, which is available as an Adobe Acrobat PDF here,   http://www.tigernews.co.uk/blog-twickers/dddsw/commercialsoftwaredev-dddsw2.pdf ... and if PowerPoint presentations don't do it for you, also thanks to Craig Murphy, you can watch a video of the presentation that I gave at DDD8 in Microsoft TVP, Reading,  http://vimeo.com/9216563

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  • FIX adapter for StreamInsight

    - by Roman Schindlauer
    Over the last couple of month, Rapid Addition, a leading FIX and FAST solutions provider for the financial services industry, has been working closely with the StreamInsight team to enable StreamInsight Complex Event Processing queries to receive input feeds from Rapid Addition’s FIX engine and to send result events back into FIX. Earlier today, Toby Corballis from Rapid Addition blogged about these capabilities here on HedgeHogs. We are very excited to demonstrate these capabilities at the SIFMA conference in New York. The session will take place tomorrow, Tuesday, 11am – 12noon, at the Hilton Hotel New York, 1335 Avenue of the Americas, East Suite 4th floor. Torsten Grabs from the StreamInsight team will join the RapidAddition and local Microsoft teams for the session.  If you are interested in attending the session please register at http://bit.ly/c0bbLL. We are looking forward to meeting you tomorrow at SIFMA! Best regards,The StreamInsight Team

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  • Links to C++ documentation

    - by Daniel Moth
    After a recent talk I gave on C++ AMP, one attendee was complaining that they were not familiar with lambdas and another found templates hard to parse. In case you are in the same boat, I thought I'd gather some essential reading material for you (also gives me one link to use in the future for referring people to ;-) Lambdas are available (in some shape or form) in all modern languages, so do yourself a favor and learn about them: Lambda Expressions in C++ (and also syntax and examples) Watch Herb Sutter's full length session on lambdas at PDC 2010 Templates, have been around in modern languages for even longer than lambdas (e.g. Generics in .NET), so again go dive in: Templates topic with full table of contents linking to subtopics In fact, why don't you refresh your knowledge and read the entire msdn C++ Language Reference – that's what I am doing! If you are looking to keep up to date with what is happening in the C++ world, stay tuned on the Visual C++ team (aka WinC++ team) blog and ask questions in the C++ forums. Comments about this post welcome at the original blog.

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  • In defense of SELECT * in production code, in some limited cases?

    - by Alexander Kuznetsov
    It is well known that SELECT * is not acceptable in production code, with the exception of this pattern: IF EXISTS( SELECT * We all know that whenever we see code code like this: Listing 1. "Bad" SQL SELECT Column1 , Column2 FROM ( SELECT c. * , ROW_NUMBER () OVER ( PARTITION BY Column1 ORDER BY Column2 ) AS rn FROM data.SomeTable AS c ) AS c WHERE rn < 5 we are supposed to automatically replace * with an explicit list of columns, as follows: Listing 2. "Good" SQL SELECT Column1 , Column2 FROM...(read more)

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  • T-SQL in Chicago – the LobsterPot teams with DataEducation

    - by Rob Farley
    In May, I’ll be in the US. I have board meetings for PASS at the SQLRally event in Dallas, and then I’m going to be spending a bit of time in Chicago. The big news is that while I’m in Chicago (May 14-16), I’m going to teach my “Advanced T-SQL Querying and Reporting: Building Effectiveness” course. This is a course that I’ve been teaching since the 2005 days, and have modified over time for 2008 and 2012. It’s very much my most popular course, and I love teaching it. Let me tell you why. For years, I wrote queries and thought I was good at it. I was a developer. I’d written a lot of C (and other, more fun languages like Prolog and Lisp) at university, and then got into the ‘real world’ and coded in VB, PL/SQL, and so on through to C#, and saw SQL (whichever database system it was) as just a way of getting the data back. I could write a query to return just about whatever data I wanted, and that was good. I was better at it than the people around me, and that helped. (It didn’t help my progression into management, then it just became a frustration, but for the most part, it was good to know that I was good at this particular thing.) But then I discovered the other side of querying – the execution plan. I started to learn about the translation from what I’d written into the plan, and this impacted my query-writing significantly. I look back at the queries I wrote before I understood this, and shudder. I wrote queries that were correct, but often a long way from effective. I’d done query tuning, but had largely done it without considering the plan, just inferring what indexes would help. This is not a performance-tuning course. It’s focused on the T-SQL that you read and write. But performance is a significant and recurring theme. Effective T-SQL has to be about performance – it’s the biggest way that a query becomes effective. There are other aspects too though – such as using constructs better. For example – I can write code that modifies data nicely, but if I haven’t learned about the MERGE statement and the way that it can impact things, I’m missing a few tricks. If you’re going to do this course, a good place to be is the situation I was in a few years before I wrote this course. You’re probably comfortable with writing T-SQL queries. You know how to make a SELECT statement do what you need it to, but feel there has to be a better way. You can write JOINs easily, and understand how to use LEFT JOIN to make sure you don’t filter out rows from the first table, but you’re coding blind. The first module I cover is on Query Execution. Take a look at the Course Outline at Data Education’s website. The first part of the first module is on the components of a SELECT statement (where I make you think harder about GROUP BY than you probably have before), but then we jump straight into Execution Plans. Some stuff on indexes is in there too, as is simplification and SARGability. Some of this is stuff that you may have heard me present on at conferences, but here you have me for three days straight. I’m sure you can imagine that we revisit these topics throughout the rest of the course as well, and you’d be right. In the second and third modules we look at a bunch of other aspects, including some of the T-SQL constructs that lots of people don’t know, and various other things that can help your T-SQL be, well, more effective. I’ve had quite a lot of people do this course and be itching to get back to work even on the first day. That’s not a comment about the jokes I tell, but because people want to look at the queries they run. LobsterPot Solutions is thrilled to be partnering with Data Education to bring this training to Chicago. Visit their website to register for the course. @rob_farley

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