Bert Wagner

Blog Post

SQL Server Converts Numbers to Asterisks

Watch this week's video on YouTube
Pop quiz: What will be the output of the below three statements?
DECLARE @val_varchar varchar(3) = '100';
DECLARE @val_bigint bigint = 100;
DECLARE @val_tinyint tinyint = 100;

PRINT('varchar...

2019-12-17

7 reads

Blog Post

SQL Server Converts Numbers to Asterisks

Watch this week's video on YouTube
Pop quiz: What will be the output of the below three statements?
DECLARE @val_varchar varchar(3) = '100';
DECLARE @val_bigint bigint = 100;
DECLARE @val_tinyint tinyint = 100;

PRINT('varchar...

2019-12-17

11 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;
 

See possible answers