What an amazing two weeks that started in Orlando for MCT Day the Saturday before Microsoft Ignite, then a quick trip to Seattle for the PASS Summit, and then finally to Kansas City to teach a dedicated SQL Performance Tuning and Optimization workshop. MCT Day: As you can see above,…
I just realized that I have not written a blog post since the beginning of May. Instead of backfilling let’s just start again here towards the end of September. First, the big news. After 17 years as a Senior Technical Instructor for New Horizons, I made the decision to make…
In this post, we will discuss Dynamic Management Objects (DMO’s) used to troubleshoot for Waiting Tasks in SQL Server.
How the SQLOS manages worker threads in the SQL Server Execution Model and the different wait queues in SQL Server to manage threads used by the CPU.
How to read Heap and Clustered Index table operators in a SQL Server Execution Plan. One way of determining if a table is structured as a Heap or a Clustered Index is to look at the table operators from the Execution Plan.
Heaps vs Clustered Indexes and how tables are structured and data is stored in SQL Server. Data rows from a table are stored in the data pages in either an unsorted order (Heap) or a sort order (Clustered Index).
Data Pages and Extents in SQL Server and how data is stored in SQL Server. Data records are physically stored in 8kb data pages.
Explore SQL Server Page Types and their roles in optimizing performance and managing data storage within your database.
How SQL Queries are processed by the Relational Engine. Parsing, Resolving, Optimizing, Compiling, and Executing to return SQL Sets.
A closer look at the Serializable Transaction Isolation Level and how it could prevent Phantom Reads concurrency issues in SQL Server.