Microsoft Azure Certification Summer
During the summer of 2020, I earned four new Microsoft certifications. This brings me to over sixty in total with 86 Microsoft exams passed.
John Deardurff
The SQL Server Database Engine
Explore the SQL Server Database Engine and its key components: SQLOS, Relational Engine, and Storage Engine.
How I spent my Summer Vacation 2019
Explore my journey through a summer of changes, moving from New Horizons to Microsoft and embracing new challenges.
Execution Plans – Table Operators
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.
Table Structures in SQL Server
Learn about table structures in SQL Server, including heaps and clustered indexes, to improve your data organization.
A Deep Dive into Non‑Clustered Indexes
Unlock performance with non-clustered indexes in SQL Server and learn best practices for effective query optimization.
Creating Indexes that Cover a Query
Explore the importance of indexes that cover a query and how they can improve SQL Server performance and eliminate lookups.
Multi‑Column Indexing in SQL Server
Unlock the power of Multi‑Column Indexing in SQL Server to optimize performance and reduce expensive query costs.
Row Versioning in SQL Server
Row versioning fundamentally changes how SQL Server handles read operations during write transactions. Instead of blocking, SQL Server can serve a previous version of the row. We enable row versioning in SQL Server by turning on READ_COMMITTED_SNAPSHOT ISOLATION (RCSI). In this post we will demonstrate blocking without row versioning and…
Concurrency: Phantom Reads
A closer look at the Serializable Transaction Isolation Level and how it could prevent Phantom Reads concurrency issues in SQL Server.