Editorials

SQLServerCentral Editorial

Why Tech Events Matter for Data Pros (and why I’m grateful)

I just got back from the Redgate Summit events in New York City, where I had the chance to present, swap stories, and nerd out with a lot of brilliant data folks. I came home energized… and then promptly slept for 14 hours on Thursday. That’s the best kind of exhaustion in my book.  The […]

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2025-08-23

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SQLServerCentral Editorial

Using Ollama on Windows 11 as an Alternative to Public LLMs

In my ongoing war against shadow AI, I’ve been testing out alternatives that most everyone can use, no matter what your technical expertise.  Although somewhat limited depending on your resources available, (laptop CPU/GPU, memory, etc.) If you want to try the newest open models without sending your prompts to the cloud, or you just want […]

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2025-08-16

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Question of the Day

The Read Committed Snapshot Isolation behaviour

I am currently working with Sql Server 2022 and AdventureWorks database. First of all, let's set the "Read Committed Snapshot" to ON:

use master;
go

alter database AdventureWorks set read_committed_snapshot on with no_wait;
go
Then, from Session 1, I execute the following code:
--Session 1
use AdventureWorks;
go

create table ##t1 (id int, f1 varchar(10));
go

insert into ##t1 values (1, 'A');
From another session, called Session 2, I open a transaction and execute the following update:
--Session 2
use AdventureWorks;
go

begin tran;
update ##t1 
set f1 = 'B'
where id = 1;
Now, going back to Session 1, what happens if I execute this statement?
--Session 1
select f1
from ##t1
where id = 1;
 

See possible answers