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  • SSIS Lookup transformation in T-SQL

    There is no equivalent to the SSIS Lookup transformation in T-SQL – but there is a workaround if you’re careful. The big issue that you face is about the number of rows that you connect to in the Lookup. SQL Books Online (BOL) says: If there is no matching entry in the reference dataset, no join occurs. By default, the Lookup transformation ...
    Posted to Rob Farley (Weblog) by rob_farley on July 8, 2014
  • SQL 2014 does data the way developers want

    A post I’ve been meaning to write for a while, good that it fits with this month’s T-SQL Tuesday, hosted by Joey D’Antoni (@jdanton) Ever since I got into databases, I’ve been a fan. I studied Pure Maths at university (as well as Computer Science), and am very comfortable with Set Theory, which undergirds relational database concepts. But I’ve ...
    Posted to Rob Farley (Weblog) by rob_farley on June 9, 2014
  • SQL TuneIn Zagreb 2014 – Session material

    I spent the last few days in Zagreb, Croatie, at the third edition of the SQL TuneIn conference, and I had a very good time here. Nice company, good sessions, and awesome audiences. I presented my “Understanding Execution Plans” precon to a small but interested audience on Monday. Participants have received a download link for the slide deck. On ...
  • Columnstore Case Study #2: Columnstore faster than SSAS Cube at DevCon Security

    Preamble This is the second in a series of posts documenting big wins encountered using columnstore indexes in SQL Server 2012 & 2014.  Many of these can be found in my big deck along with details such as internals, best practices, caveats, etc.  The purpose of sharing the case studies in this context is to provide an ...
    Posted to Jimmy May (Weblog) by aspiringgeek on May 26, 2014
  • Updated sp_indexinfo

    It was time to give sp_indexinfo some love. The procedure is meant to be the ''ultimate'' index information procedure, providing lots of information about all indexes in a database or all indexes for a certain table. Here is what I did in this update:Changed the second query that retrieves missing index information so it generates the index name ...
    Posted to Tibor Karaszi (Weblog) by TiborKaraszi on May 22, 2014
  • Columnstore Case Study #1: MSIT SONAR Aggregations

    Preamble This is the first in a series of posts documenting big wins encountered using columnstore indexes in SQL Server 2012 & 2014.  Many of these can be found in this deck along with details such as internals, best practices, caveats, etc.  The purpose of sharing the case studies in this context is to provide an easy-to-consume ...
    Posted to Jimmy May (Weblog) by aspiringgeek on May 19, 2014
  • SQL Saturday Chicago (#291) - Clash of the Row Goals - Demos

    Thank you to everyone who joined me today at SQL Saturday Chicago for my ''Clash of the Row Goals'' session. I'm honored that so many people would attend a talk with such an incredibly arcane title -- and always glad to find a curious, interested, and intelligent audience. The demos I showed during the session are attached to this post. If you ...
    Posted to Adam Machanic (Weblog) by Adam Machanic on April 26, 2014
  • TechDays 2014 – Session material

    Last week in the Hague, I had the honor to present two very different sessions at the Dutch TechDays conference. A deep-dive session on internals of the SQL Server 2012 nonclustered columnstore index, and a very developer-oriented session on the bare basics of performance tuning. To my delight, both times the room was filled with very interested ...
  • Top 10 DBA Mistakes on SQL Server. (Now with Prizes for Participation!)

    The first big mistake I made as a DBA was coming to work with my zipper wide open. But I digress.Hear one of my most popular session via streaming media at SQLSentry.TV!Microsoft SQL Server is easier to administrate than any other relational database on the market.  But “easier than everyone else” doesn’t mean it’s easy.  And it doesn’t ...
    Posted to Kevin Kline (Weblog) by KKline on April 9, 2014
  • GUID, fragmentation and performance: the eternal flame.

    In the last months a lot of discussion has been done around the topic of GUIDs and their usage as Clustered Keys. We had a very “hot” discussion on that several years in Italy, and looking on the web you can see that this kind of question surface gain periodically. Recently I discussed it also with my friend Thomas. Discussion that gave me some ...
    Posted to Davide Mauri (Weblog) by manowar on April 6, 2014
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