A full backup and log backup can overlap on one SQL Server database. A customer noticed both during a slowdown.
SQL SERVER – Delete Statement and Index Usage
An index can help a DELETE statement locate rows to remove. A customer asked whether indexes benefit modifications alongside SELECT queries.
Spinlock in SQL Server: What It Is and How to Read One
A spinlock in SQL Server is a very short lock on an internal structure, and a thread that waits for it keeps spinning on the CPU instead of sleeping. This post explains how a spinlock differs from a latch and a lock. It reads sys.dm_os_spinlock_stats, measures a ten second window and lists the Extended Events that report backoffs.
SQL SERVER – What is Latch?
What is Latch protection in SQL Server was a reader question after my scheduler video. A latch provides short-lived internal synchronization.
SQL SERVER – SQLOS Scheduler and the Process States
I strongly suggest that you first watch it before we continue on today’s topic of SQLOS Scheduler and the Process States.
Where are SQL Jobs Stored? – Interview Question of the Week #293
Question: Where is SQL Jobs Stored?
Answer: In MSDB Database in dbo.sysjobs table. Let us learn about it in today’s blog post.
CONCAT and NULL – SQL in Sixty Seconds #123
I have decided to convert the blog into the video of SQL in the Sixty Seconds. Let us learn about CONCAT and NULL – SQL in Sixty Seconds #123.