september, 2021

tue21sep6:00 PM8:00 PMVirtual EventI will speak at PASS RuhrgebietIntelligent Query Processing – Table variable deferred compilation and approximate count distinct in Microsoft SQL Server6:00 PM - 8:00 PM CET SQL PASS Ruhrgebiet, Wittener Str. 45, 44799 Bochum



Microsoft has introduced Table Variable Deferred Compilation as part of Intelligent Query Processing in SQL Server 2019 to improves plan quality and overall performance for queries referencing table variables. In this session, we will use some practical examples to understand how this feature actually works and what its limitations are.

Microsoft has introduced the new feature APPROX_COUNT_DISTINCT in Microsoft SQL Server 2019 to speed up approximate count of unique values in a large dataset and save query resources. In this session, we will evaluate the performance improvements of this feature using different scenarios.

Speaker for this event

  • Torsten Strauß

    Torsten Strauß

    MVP | MCSE | MCT

    Torsten (MVP, MCSE, MCT) has been working with Microsoft SQL Server since the turn of the millennium and is specialized in performance optimization for large SQL Server environments. He has been with bp as a database engineer for over two decades and collaborates closely with Sarpedon Quality Lab as a Principal Microsoft SQL Server Consultant. Torsten is the founder of and has given more than 120 presentations on Microsoft SQL Server performance optimization at national and international conferences and user groups. Torsten has been recognized as a Microsoft Most Valuable Professional for Data Platform since 2018.


    MVP | MCSE | MCT


(Tuesday) 6:00 PM - 8:00 PM CET


SQL PASS Ruhrgebiet

Wittener Str. 45, 44799 Bochum