Query Optimizer Phases
The SQL Server Query Optimizer uses cost-based optimization to create an execution plan with the least cost.
SQL Server
Azure Data Engineer
John Deardurff passed the DP-200 and DP-201 exam for the Microsoft Certified: Azure Data Engineer certification.
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.
Task Execution Model
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.
Transactions and Errors
SQL Transaction and Error Handling? What is the difference between Auto-Commit and Explicit Transactions and how transaction affect Errors and Exception Handling?
Restore and Recovery
The restoration process of a SQL Server database passes through two phases: Restore and Recovery.
Writing T-SQL Videos
In late 2018, I recorded a series of videos for APRESS publishing on how to write T-SQL Queries. (I have linked to the O’Reilly website below.) There are four titles in the series with each title about 45 minutes in length. The first is how to write a T-SQL SELECT…
What is SQL?
What is SQL? What is the difference between SQL the language and SQL the server?
Writing a SELECT statement
What are the basics in writing a T-SQL SELECT? How to return columns and records from a table in SQL Server.
Filtering Records by Numbers
How to use the WHERE statement to filter records when the value is a number or integer data type in a T-SQL statement.