Overview: Consistent SQL practice across varied platforms builds real job-ready confidence.Guided lessons help beginners, while timed challenges sharpen intervi ...

Thomas LaRock: "Without a basic understanding of wait events and how the occur, you will waste a lot of time trying and guessing at how to improve the performance of a query." Optimizing SQL Server ...

SQL, the Structured Query Language, remains one of the most widely used programming languages, coming in fourth in Stack Overflow’s research for 2023. Just over half (51.52%) of professional ...

Through the many changes in IT over the years, one constant has always been a concern for performance. With database systems there is especially true. Even with the many advances in relational ...

Testing and tuning SQL is an often-overlooked aspect of incorporating the database into your DevOps pipeline. It is important to be able to analyze and optimize SQL performance within your application ...

Developers often dismiss dynamic SQL used in PL/SQL programs for two reasons. One reason is that it's riskier because the SQL statements aren't parsed until runtime, so it's more difficult to catch ...

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception. Database engines like SQL Server are incredibly complex ...