Pablo Echeverria

I've worked for more than 10 years as a software programmer and analyst, during which time I studied parallel programming and became a senior programmer specialist. In 2016, I switched jobs to a DBA position, where I've implemented new processes and created better monitoring tools, while I'm growing my data scientist skills to improve my customer's businesses.

Check out Pablo's most recent book https://bpbonline.com/products/hands-on-data-virtualization-with-polybase. This book brings exciting coverage on establishing and managing data virtualization using Polybase. This book teaches how to configure Polybase on almost all relational and nonrelational databases. You will learn to setup a test environment for any tool or software instantly without any hassle. You will learn how rapidly to design and build high performing data warehousing solutions.
  • Interests: technology
  • Skills: programming, databases

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SQLServerCentral Article

Check Your Backup Compliance Against a Data Management Provider

As a database administrator, it's your responsibility to ensure the customer data won't get lost in case of a disaster, so you either provide your own backup strategy, use a third-party script, or hire a data management provider. With the first two options, you have full control over your environment so you can know exactly […]

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2020-04-02

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SQLServerCentral Article

Monitor Current Analysis Services Activity

Although not every business has SSAS (SQL Server Analysis Services) installed nor use it extensively, the ones who do also care about their database responsiveness. If it is slow, what else is running that may be causing the slowness? Are there any locks? What commands are being run, who is running them, from where? How […]

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2019-12-17

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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