• Dmitri Korotkevitch


SQL Server Query Optimizer uses a cost-based model when choosing an execution plan for queries. It estimates the costs of the different execution plans and chooses the one with the lowest cost. Remember, however, that SQL Server does not search for the best execution plan available for the query, as evaluating all possible alternatives is time consuming and expensive in terms of the CPU. The goal of Query Optimizer is finding a good enough execution plan, fast enough.


Execution Plan Query Optimizer Query Execution Leftmost Column Statistic Column 

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© Dmitri Korotkevitch 2016

Authors and Affiliations

  • Dmitri Korotkevitch
    • 1
  1. 1.TampaUSA

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