Explore query performance optimization

Database Administrator
Azure SQL Database
SQL Server

Read and understand various forms of execution plans. Compare estimated vs actual plans. Learn how and why plans are generated. Understand the purpose and benefits of the Query Store.

Learning objectives

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


  • Ability to use tools for running queries against a Microsoft SQL database, either on-premises on cloud-based.
  • Ability to write code in the SQL language, particularly the Microsoft T-SQL dialect, at a basic level.
  • Basic understanding of structure and usage of SQL Server indexes.
  • Basic understanding of relational database concepts.