HuggyBear

Born and raised in Vancouver, Canada, with a brief excursion to study in Brussels, Melbourne & Washington D.C., Hugo has been working with SQL Server since 1998. He’s busied himself as a DBA since 1999 (with mcdba & mcitp certifications in ‘01 & ‘08 respectively), as independent consultant with his own company, Intellabase Solutions, since 2002 (now part time), and has held various permanent position with Transcontinental, Sun Life Canada, and now Alithya as a consultant. He enjoys writing documentation for quick, safe infrastructure rebuilds and expansions, and most challengingly, propositions to Executives Management on how to improve enterprise Security. He has spoken at SQLteach/DevTeach, Montreal Dot Net User Group, SQLGulf, Vermont User Groups over 5 times, has a blog on SQLServerCentral, and has been recognised as a SQL Server MVP in 2010.
  • Interests: Lately (2019): windfoiling or windsurfing with a Skroka foil....amongst many other supposedly 'extreme' sports, but which are really just the norm for people raised in Lotusland aka Vancouver, BC, lower-mainland region, Sea-to-Sky country as we know it.
  • Blog: http://dbhive.blogspot.com/
  • Jobs: SQL DBA, Data Engineer, Migrator, Clusterer, Security Implementor

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Technical Article

The Importance of the Segregation of Duties with Respect to Internal Controls

I diverge a little from the typical coding-based/oriented best practice to one that is focused on governance within public or government organisations with respect to the security of the data in databases used for annual reports. Internal controls fall...

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2009-02-19

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Technical Article

All the Aggregates you crave with Grouping Sets in SQL Server 2008

As reporting requirements increase, it seems that aggregate functionalities have thankfully risen to the occasion concurrently. To maintain its competitive edge as Staples Canada’s best vendor, BaldGorilla, where I’m currently consulting, has been able...

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2009-02-05

2,050 reads

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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;
 

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