Distinct Rows, And The Columns You Choose
Footnote I have two queries. They return the same number of rows. The only difference is one column in the…
2019-05-20
Database Performance
Should Optimistic Be The Default Isolation Level?
Two Words Alright, I’ve lied to you already. There are way more than two words involved, here. I recently had…
2019-05-15
Queries with RECOMPILE and Query Store
Last week in our IEPTO2 class I was asked about queries with RECOMPILE and Query Store. Specifically: Do queries that have the OPTION (RECOMIPLE) hint go into Query...
2019-05-14
SQL Server 2017: here a NUMA, there a NUMA...
The first unexpected behavior is one that may already be familiar to many. [Max server memory] is not as often a maximum for SQL Server [total] memory as it...
2019-05-14
SQL SERVER – Get Last Known Actual Execution Plan for a Previously Cached Query Plan
This feature works with SQL Server 2019 and onwards. If you are using an earlier version of SQL Server this feature will not work and will give you an...
2019-05-11
How to load test a SQL database
How do you know whether a database code change is going to be great, okay or awful? If you want to test a new version of SQL Server how...
The...
2019-05-08
The Only Thing Worse Than Optional Parameters…
Kitchen Stink A lot has been written about “kitchen sink” queries. A couple of my favorites are by Aaron Bertrand…
2019-05-07
Introduction to Wait Statistics
Paul Randal provides a detailed introduction to troubleshooting SQL Server workload performance using wait statistics.
The post Introduction to Wait Statistics appeared first on SQLPerformance.com.
2019-05-07
Query Store, Plan Forcing and Table Variables
This weekend I was in Stockholm in Sweden, talking Query Store and plan forcing with Steinar Anderson, when he mentioned the problems he had while forcing plans that had...
The...
2019-05-06
SQL Server Monitoring Week – SQL Plan Warnings
Today I begin a week-long series where I will be discussing various SQL Server Monitoring Tools. My primary job is to help people with my consulting workshop Comprehensive Database...
2019-04-26
Blogs
Creating a Pulsing Conducting Baton - Part 1
By Bert Wagner
Train Wreck The last time I watched a high school band nearly fall apart mid-performance...
ISACA AI Material/Exam Prep Discount (May 18 – June 30, 2026)
By Brian Kelley
If you are considering any of the ISACA AI certs like the Advanced Artificial...
A Fabric solution can be very cost effective
By ChrisJenkins
Are you currently using Microsoft Fabric or considering migrating to it? If so, there...
Forums
Why Your Index Isn't Being Used? - Reading Execution Plans to Find the Real Culprit
Comments posted to this topic are about the item Why Your Index Isn't Being...
Distance Metric Algorithms
Comments posted to this topic are about the item Distance Metric Algorithms
What Can AI Really Do?
Comments posted to this topic are about the item What Can AI Really Do?
Question of the Day
Distance Metric Algorithms
What are the distance metric algorithms that can be used in VECTOR_DISTANCE()?
See possible answers