It’s always parameter sniffing (part 1?)
This is a blog post about a perennial issue. Have you ever had a call in the middle of the...
2019-01-28 (first published: 2019-01-16)
3,029 reads
My alternative to sp_WhoIsActive
I use sp_WhoIsActive a lot. I’m extremely grateful for Adam Machanic writing it. It has tons of options that let...
2019-01-28
5,080 reads
Memory Grants part 6: Memory used in aggregate functions (Min/Max/etc)
So far in this series, I’ve been focusing on the Sort operator. It’s pretty easy for demos since I can...
2019-01-25
678 reads
The Execution plan comparison feature (in SSMS)
Did you know that you can compare two execution plans in SQL Server Management?
It’s really cool. I use it a...
2019-01-25
991 reads
SQL Server Monitoring: What to start measuring
So you’ve got a SQL Server that you want to monitor. What should you monitor? In my opinion, at bare...
2019-01-22 (first published: 2019-01-14)
2,656 reads
Memory Grants part 4: The Resource Semaphore
Part of query memory grants, part 4! This post will cover the wait type RESOURCE_SEMAPHORE briefly, but the focus is...
2019-01-21
1,041 reads
New page on this blog: Contact Me
This is not a technical post! Just wanted to say that I set up a public email address for this...
2019-01-19
132 reads
When the query plan hash is deceptive
When you’re querying the plan cache, you need to know the four primary objects: the query hash, query plan hash,...
2019-01-17
756 reads
Execution plans: RetrievedFromCache
I first came across the value for RetrievedFromCache when I was reading a confusing execution plan. At first, I thought...
2019-01-11
688 reads
Why is the query hash so useful?
An example of how I use the query hash
I wrote a blog on what the query hash is, right here....
2019-01-10
6,460 reads
Blogs
Claude Code Helps Analyze Test Data Manager Log Files
By Steve Jones
I had a customer ask about analyzing their Test Data Manager (TDM) usage to...
PowerPoint to HTML with Claude AI
By Steve Jones
I had an idea for an animated view of a sales tool, and started...
Don’t Miss Out – SQL Server Query Tuning Fundamentals Starts Next Monday!
Next Monday, February 9, 2026, my one-day live online training SQL Server Query Tuning...
Forums
Huge frustration - Database watcher with two elastic pools
Think there's a reason why this is still in preview, but have someone manage...
SQL Server 2025 Query Performance Tuning: Troubleshoot and Optimize Query Performance
Comments posted to this topic are about the item SQL Server 2025 Query Performance...
Is it uncommon for Dev's to have a data model of the source data
This is a generic question. To the moderators, I wasn't sure where to place...
Question of the Day
Creating JSON I
On SQL Server 2025, what happens when I run this code:
SELECT JSON_OBJECTAGG( 'City':'Denver') GOSee possible answers