Query Exercise: Improving Cardinality Estimation
Your challenge for this week is to tune a query. Say Stack Overflow has a dashboard that shows the top-ranking users in their most popular location. It’s even got an index to support it
2024-02-16
Uncategorized
Attention SQLBits 2024 Attendees!
Microsoft will be featured at SQL Bits with a keynote speaker, a full day of training and a few other sessions. Register today for the conference in March and we hope to see you there.
2024-02-14
1,246 reads
Implementing functions and more fun in Spark Connect using gRPC and .NET
All Spark Connect Posts
Code
Goal of this post The goal of this post is to look at creating a SparkSession and a DataFrame that will wrap the Range relation and...
2024-02-10
35 reads
The Birth of Computing Was the Birth of Testing
Last year I had the most wonderful opportunity. I took part in Data Relay, an event in the UK which tours several cities. Wonderful time, but not the focus here. The very first one was held at the National Museum of Computing at Bletchley Park. Without a doubt, you've heard of Alan Turing, Enigma, and […]
2024-02-10
76 reads
Moving towards the DataFrame API using the Spark Connect gRPC API in .NET
All Spark Connect Posts
Code
Goal of this post So there are two goals of this post, the first is to take a look at Apache Arrow and how we can...
2024-02-05
72 reads
Resolving the MERGE statement attempted to UPDATE or DELETE the same row more than once error
I'm receiving the following error when attempting to run a T-SQL MERGE statement: "Msg 8672, Level 16, State 1, Line 123. The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row.
2024-02-05
Exploring the Spark Connect gRPC API more
All Spark Connect Posts
Code
Goal of this post In this post we will continue looking at the gRPC API and the AnalyzePlan method which takes a plan and analyzes it....
2024-02-01
105 reads
Exploring the Spark Connect gRPC API
All Spark Connect Posts
Code
Goal of this post In the first two posts, we looked at how to run some Spark code, firstly against a local Spark Connect server and...
2024-01-26
301 reads
Configuration of Azure SQL Database Auditing
This article shows how you can configure auditing on your Azure SQL Database.
2024-01-22
2,118 reads
Learning NoSQL
NoSQL is an option for a database platform and Steve wonders if you can discuss and debate the use of NoSQL for your business partners? Or are you going to learn more? He is.
2024-01-17
229 reads
Blogs
Fabric as a Data Mesh Enabler: Rethinking Enterprise Data Distribution
By Chris Yates
For decades, enterprises have approached data management with the same mindset as someone stuffing...
Truncate Table Pitfalls
Truncate Table Pitfalls Truncating a table can be gloriously fast—and spectacularly dangerous when used carelessly....
dataMinds Connect 2025 – Slides & Scripts
You can find all the session materials for the presentation “Indexing for Dummies” that...
Forums
Technological Dinosaurs or Social Dinosaurs?
Comments posted to this topic are about the item Technological Dinosaurs or Social Dinosaurs?
DBCC CHECKIDENT
Comments posted to this topic are about the item DBCC CHECKIDENT
Distributed Availability Group Health: T-SQL and Zabbix
Comments posted to this topic are about the item Distributed Availability Group Health: T-SQL...
Question of the Day
DBCC CHECKIDENT
What is returned as a result set when I run this command without a new seed value?
See possible answers