Setting Up a Mac for Data Engineering and AI Work
If you work with data pipelines, SQL, notebooks, or machine learning models, a Mac with Apple Silicon is genuinely one of the best machines you can have as a...
2026-06-25
14 reads
SQL Guatemala
Five Ways Redshift Serverless Quietly Eats Your Budget
It is Friday, the queries are running, and nobody is watching the bill. That is the whole charm of Redshift Serverless: you stop thinking about nodes and resizes. It...
2026-06-22 (first published: 2026-06-19)
21 reads
Killing Explicit Sort Steps in Redshift with the Right SORTKEY
You paste a slow Redshift query plan into PlanTrace and one of the tuning insights reads "SORTKEY optimization candidate", pointing at an explicit sort step that's adding cost you...
2026-06-15
8 reads
5 Starter Projects for Your AI and Data Engineering Portfolio
Reading tutorials is fine. Shipping something is better. If you are trying to break into data engineering or AI, nothing on your resume carries more weight than a GitHub...
2026-06-18 (first published: 2026-06-12)
36 reads
AI in SQL Server vs PostgreSQL: Vector Search, Embeddings, and RAG Compared
Both SQL Server and PostgreSQL are moving fast into AI territory — and if you manage either (or both), you've probably wondered how they compare when it comes to...
2026-06-22 (first published: 2026-06-08)
540 reads
PostgreSQL 18 Finally Makes BUFFERS the Default. Here Is Why That Matters
You run EXPLAIN ANALYZE on a slow query, stare at the plan, and something still feels off. The estimated rows look reasonable, the node timings add up, but you...
2026-06-05
29 reads
AI and Data Engineering on the Edge: The Good, the Bad, and the Overhyped
Running AI and data pipelines on the edge instead of the cloud has gone from a niche embedded concern to a default option on a lot of architecture diagrams....
2026-06-03
31 reads
Data Skew in Data Engineering: What It Is and How to Fix It
You kick off a distributed job expecting it to finish in minutes — but one task keeps running while all others have long since completed. The culprit is almost...
2026-06-17 (first published: 2026-06-01)
474 reads
5 SQL Tricks Worth Remembering Before You Close the Laptop
Disclosure: this post may contain links to books as an affiliate link. If you purchase through it, this site may earn a small commission at no extra cost to...
2026-06-12 (first published: 2026-05-29)
839 reads
PostgreSQL: Diagnosing and Fixing a Sequential Scan with No Filter Predicate
A sequential scan is not always a problem — PostgreSQL's planner often chooses one correctly for small tables or queries that return most of a table's rows. The dangerous...
2026-05-25
680 reads
Blogs
Advice I Like: Respect
By Steve Jones
“Don’t aim to have others like you; aim to have them respect you.” –...
Blue Sky Programming – The Optimism Trap
Many years ago, before I joined Oracle, I was working on a major modernisation...
Setting Up a Mac for Data Engineering and AI Work
If you work with data pipelines, SQL, notebooks, or machine learning models, a Mac...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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Question of the Day
BIT_COUNT I
In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers