Strange Filtered Index Problem

  • Comments posted to this topic are about the item Strange Filtered Index Problem

  • Thanks for a very informative article!

    I gave you a 4* instead of 5* simply because I personally prefer (as the years go by) to have the pertinent information right there at the top, with the entertaining description of how you found the cause below - simply to save time if all I want is a reminder of the facts.

    But, the 4* I gave are at the top of the 4* band 😀


    select geometry::STGeomFromWKB(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  • Nice digging deep into the root cause & thanks for sharing useful info.

    Useroptions DB settings tend to be overlooked some times when optimising code....

    MCSE Data Platform; BI
    MCITP Database Developer; BI

  • Very interesting, I need to remember to keep an eye out for that @.

    Thanks for the good article, Mike!

    [font="Arial"]Knowledge is of two kinds. We know a subject ourselves or we know where we can find information upon it. --Samuel Johnson[/font]

  • Great information, thanks.

  • Nicely done on figuring it out.

  • Excellent article!

    Great detective work and very well written!

    Hope you keep them coming 🙂

  • All--thanks for the kind words. Mister.magoo--point well taken. I will preface with a summary if I ever write another one of these.

  • Although this article is over 3 years old I came around by accident today. Very interesting and - to be honest - I didn't had it on the focus so far.
    I gave 5 * because of the very well and easy explained root cause of the scenario.

    Microsoft Certified Master: SQL Server 2008
    MVP - Data Platform (2013 - ...)
    my blog: (german only!)

  • thanks for teaching very old dog new tricks, I do have a vendor supported database which has all it's db set to this

  • Very interesting sir. Thanks for sharing

  • Thanks for sharing your learning Mike. it was very helpful/

    But my DB has is_parameterization_forced =0 and still clustered index scan is happening. The filtered index is not being picked. Still investigating.....

    Online Trainer For SQL DBA and Developer @RedBushTechnologies with 18 yrs exp.

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