Cardinality estimation (CE) is a process used by the query optimizer to estimate the number of rows returned by a query or sub-part of a query. These estimates rely on two underlying things: statistics about the data and a set of assumptions—known as the model.
Welcome to part twenty of the plansplaining series. It has been a long time since I last wrote a plansplaining post, partly because of my health, but also for a large part because I was out of ideas. But recently I decided to dig a bit deeper into a feature that was released in SQL Server 2017 and that I had so far not played with: SQL Graph.
This article examines how GitHub Copilot might be used when working with T-SQL Code.
Steve reminds people today that the recommendations from execution plans aren't always what you want to use when tuning your database.
If you aspire to drive Database DevOps at your company, regardless of the sector you work in, this webinar provides a unique opportunity to learn from experts in the finance sector who have successfully paved the way. Join us December 6th.
Learn about various PowerShell commands that can be used to administer virtual machines on Amazon AWS.
Someone generated a fake speaker profile for their conference, which Steve finds disturbing.
Learn the basics of how to work with objects in Cassandra, a NoSQL database.
In this level of the Stairway to Database DevOps, you'll get an introduction to branching and merging. Learn how to create a branch for making your changes to the codebase, submitting these in a code review, and then merging the changes into those made by other developers.
If you are considering moving into management as a career goal, read today's editorial from Steve, with some advice based on an interesting article from someone with experience at Facebook and Stripe.
By Steve Jones
dolorblindness – n. the frustration that you’ll never be able to understand another person’s...
By Steve Jones
I had a customer ask about analyzing their Test Data Manager (TDM) usage to...
By Steve Jones
I had an idea for an animated view of a sales tool, and started...
Comments posted to this topic are about the item Optimism Without Illusion or Why...
Hi all, I'm trying to do classic scenario for loading multiple Excel files into...
Hi So the case statement is slowing this down - but for the life...
In SQL Server 2025, what is returned by this code:
SELECT EDIT_DISTANCE('tim', 'tom')
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