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Microsoft

Optimize query performance in Azure SQL

Microsoft via Microsoft Learn

Overview

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  • Explore query performance optimization

    After completing this module, you will be able to:

    • Generate and save execution plans
    • Compare the different types of execution plans
    • Understand how and why query plans are generated
    • Explain the purpose and benefits of the Query Store
    • Investigate the available reports and data in the Query Store
  • Explore performance-based database design

    After completing this module, you will be able to:

    • Explore normal forms and how they affect database design
    • Choose appropriate datatypes for your data
    • Evaluate appropriate index types
  • Evaluate performance improvements

    After completing this module, you will be able to:

    • Determine when changing indexes or defining new ones can affect performance
    • Evaluate wait statistics as an aid in finding areas for performance improvement
    • Understand how query hints work, and when to use them

Syllabus

  • Explore query performance optimization
    • Introduction
    • Understand query plans
    • Explain estimated and actual query plans
    • Describe dynamic management views and functions
    • Explore Query Store
    • Identify problematic query plans
    • Describe blocking and locking
    • Exercise: Identify and resolve blocking issues
    • Module assessment
    • Summary
  • Explore performance-based database design
    • Introduction
    • Describe normalization
    • Choose appropriate data types
    • Design indexes
    • Exercise: Identify database design issues
    • Module assessment
    • Summary
  • Evaluate performance improvements
    • Introduction
    • Describe wait statistics
    • Tune and maintain indexes
    • Understand query hints
    • Explore performance scenarios
    • Exercise: Isolate problem areas in poorly performing queries
    • Module assessment
    • Summary

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