Rob Farley is a Microsoft Certified Master, Microsoft Certified Trainer and is a recipient of the Microsoft MVP Award for SQL Server since 2006. Rob provides consulting and training courses around the world in SQL and BI topics. His community involvement keeps him quite busy -  as well as running the Adelaide [adelejde] SQL Server User Group, he is a former Director of PASS and helps co-ordinate many events around the world. He has also assisted Microsoft Learning in developing many certification exams, writes a blog and co-writes "Professional SQL Server 2012 Internals and Troubleshooting". On his blog, you can find him writing about various SQL topics, particularly T-SQL and the Query Optimizer. This talk has taken place during SQLDay Summit 2019 in Wroclaw, Poland on 13 May 2019 (Monday). Interviewers: Kamil Nowinski, Michal Sadowski.