What is Concurrency in Databases? Concurrency control ensures that multiple transactions can occur simultaneously without leading to data inconsistency. Two popular concurrency control mechanisms are: MVCC in PostgreSQL PostgreSQL...
2025-06-25 (first published: 2025-06-11)
400 reads
After spending decades working in SQL Server, getting familiar with PostgreSQL felt like traveling to a country where everyone speaks a language I mostly understand – but with a different accent...
2025-06-25 (first published: 2025-06-11)
770 reads
Instead of teaching the CISA exam prep course, I'm teaching in the IT track. With Artificial Intelligence (AI) being a central focus in most audit and security tracks, I'm...
2025-06-25
16 reads
📘 Understanding PESTLE PESTLE is a strategic framework used to evaluate external macro-environmental factors that influence business operations. It stands for This model is particularly useful for assessing how...
2025-06-24
22 reads
Configuration, Performance, and Unnecessary Usage TempDB is the SQL Server equivalent of a junk drawer – everyone uses it, nobody monitors it, and eventually it becomes a bottleneck you...
2025-06-23 (first published: 2025-06-04)
834 reads
I have a proper blog post coming out tomorrow for T-SQL Tuesday, but today, celebrate with me that SSMS 21 finally, at long last, fixes the irritating fact that...
2025-06-23 (first published: 2025-06-09)
1,031 reads
SQL Bits 2025 was amazing, as always. It’s been my favorite conference to attend, with lots of friends, a family atmosphere, and some amazing speakers from whom I learn...
2025-06-22
38 reads
lackout – n. the sudden awareness that you’re finally over someone, noticing that the same voice that once triggered a cocktail of emotions now evokes nothing at all –...
2025-06-21
28 reads
Here’s how these tools can make Kubernetes security easier and help you avoid common pitfalls.Image from haalkab on Pixabay.Kubernetes is hands-down the go-to tool for managing containerized applications, yet it...
2025-06-21
40 reads
Erin West gave the keynote for the 2025 Techno Security & Digital Forensics East conference on cyber scams. How bad is it? Well, according to the Internet Crime Complaint...
2025-06-20 (first published: 2025-06-06)
326 reads
By ChrisJenkins
Have you been thinking about migrating your reporting to Microsoft Fabric or Snowflake but...
The Joyful Craftsmen has become the new owner of Revolt BI. The merger creates...
By Steve Jones
It’s Prime Day. A few of my recommendations, since I want to do some...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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I have this code on SQL Server 2022. What happens when it runs all at once?
DROP TABLE IF EXISTS dbo.Commission GO CREATE TABLE dbo.Commission (id INT NOT NULL IDENTITY(1,1) CONSTRAINT CommissionPK PRIMARY KEY , salesperson VARCHAR(20) , commission VARCHAR(20) ) GO INSERT dbo.Commission ( salesperson, commission) VALUES ( 'Brian', 12 ), ( 'Brian', 'None' ) GOSee possible answers