Tony Davis

  • Interests: football, modern literature, real ale

External Article

What’s New in SQL Monitor 10?

SQL Monitor 10 packs a lot more under the hood in terms of connectivity, establishing cause-and-effect, and alerting. This article provides the high-level tour of the features we've introduced or improved, and why.

2020-03-20

Tribal SQL eBook Download

TribalSQL: 15 New Voices in SQL Server

MidnightDBA and Red Gate have joined together to produce a new book on SQL Server, written by 15 first-time authors. The resulting book, TribalSQL, includes everything you should know about SQL Server that isn’t taught in traditional training, they call it Tribal knowledge.

You rated this post out of 5. Change rating

2019-03-26 (first published: )

444 reads

SQLServerCentral Editorial

Swallowing the Camel

There is a paradox in the nature of the abstractions that many developers want when dealing with databases. They will strain at the gnat, but swallow a camel (Matthew 23:24). Whereas they will recoil with horror when a DBA suggests that an abstraction layer based on views, functions and procedures in a separate database schema […]

You rated this post out of 5. Change rating

2014-09-15

186 reads

Blogs

Advice I Like: Art

By

Superheroes and saints never make art. Only imperfect beings can make art because art...

Why Optimize CPU for RDS SQL Server is a game changer

By

One feature that I have been waiting for years! The new announcement around optimize...

Performance tuning KubeVirt for SQL Server

By

Following on from my last post about Getting Started With KubeVirt & SQL Server,...

Read the latest Blogs

Forums

The AI Bubble and the Weak Foundation Beam

By dbakevlar

Comments posted to this topic are about the item The AI Bubble and the...

data type gets lost in data flow

By stan

Hi, in a simple oledb source->derived column->oledb destination    data flow, 2 of my...

i noticed the sqlhealth extende event is on by default , so can i reduce

By rajemessage 14195

hi, i noticed the sqlhealth extended event is on by default , and it...

Visit the forum

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