SQL Server For Beginners: Why Declared Variables Cause Bad Estimates Demo

Why Declared Variables Cause Bad Estimates


Going Further


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2 thoughts on “SQL Server For Beginners: Why Declared Variables Cause Bad Estimates Demo

  1. How can you recommend using dynamic queries compare to non-dynamic ones if the later gets better plan by hashing the query?

    I only do static non-dynamic and never used option recompile before

    1. Yoni — I’m having trouble parsing your question, here.

      Can you clarify what you mean by “hashing the query”, and where you see a non-dynamic query getting a better plan?

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