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...
2026-07-03 (first published: 2026-06-19)
270 reads
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
39 reads
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...
2026-06-29 (first published: 2026-06-12)
550 reads
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)
864 reads
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
56 reads
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
45 reads
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)
601 reads
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)
956 reads
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
714 reads
If you've ever loaded a 2 GB CSV into pandas just to run a few aggregations — and watched your machine struggle — there's a better tool for the...
2026-06-10 (first published: 2026-05-21)
588 reads
By Steve Jones
Thanks to everyone that attended my sessions at VS Live San Diego yesterday. It...
By Steve Jones
I was creating a question on sp_readerrorlog and realized that this procedure is different...
By SQLPals
Why sys.fn_dblog Is Undocumented And Why It's Still There Why sys.fn_dblog...
Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...
Comments posted to this topic are about the item The Disabled Index
Comments posted to this topic are about the item Server-Level Table sizes
I run this code on SQL Server 2022.
CREATE TABLE Drink
(
drinkid INT NOT NULL
CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
drinkname VARCHAR(20),
rating NUMERIC(2, 1)
)
GO
INSERT INTO Drink
(
drinkid,
drinkname,
rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result? See possible answers