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  • SSIS: living in a parallel world? Not yet...

    Today I come into a nice bug (misfeature?) of SSIS 2008 and I'd like to share it with you. Let's start from the beginning: One of the keys to make something speedy is to parallelize it. In TableDifference I read from two inputs, compare them and produce several outputs for new, deleted, updated rows and so on. It is the classical ...
    Posted to Alberto Ferrari (Weblog) by AlbertoFerrari on September 14, 2008
  • Table Difference 2.0 - Call for beta

    The new version 2.0 of SSIS SCD handling component TableDifference is in beta, I am searching for beta testers and some help in writing an installer for it. You will find all the informations at The final release of the component will be as usually freely available with sources as soon as it has been tested enough.
    Posted to Alberto Ferrari (Weblog) by AlbertoFerrari on December 17, 2007
  • Table Difference 1.2

    TableDifference has been updated to version 1.2. For those who want to read the main description of the component can be found here but take a look at the full story, this component and the documentaton has been updated several times. You will find complete documentation about the changes at and all the sources and binaries ...
    Posted to Alberto Ferrari (Weblog) by AlbertoFerrari on July 23, 2007
  • Data Flow Components, constructors and SSIS

    Yesterday I had to fix a simple still subtle bug in TableDifference, I think sharing the experience will be useful for everybody involved in custom component creation. The component has some fields that are initialized in the component constructor, at the end of the work the component does not clear them as I would expect the object to be ...
    Posted to Alberto Ferrari (Weblog) by AlbertoFerrari on July 31, 2006
  • Threads and custom components: FlowSync 1.0

    Several people downloaded TableDifference to handle SCD faster, some of them, especially using it on huge table (more than 10 millions rows) noticed memory problems. The problem is that of a flow running too fast and making TableDifference cache data, we know of it and now we decided to solve it creating a new component called ''FlowSync''. ...
    Posted to Alberto Ferrari (Weblog) by AlbertoFerrari on July 6, 2006
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