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  • The Query Optimizer and Cost Estimation

    Last year when I presented my session regarding the Query Optimizer at the PASS Summit and at a couple of local user groups, I was asked how the estimated CPU and I/O costs in an execution plan are calculated. Since Microsoft does not publish how these costs are calculated all I could say was that each operator cost depends on the operator ...
    Posted to Benjamin Nevarez (Weblog) by Ben Nevarez on February 17, 2010
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