SQLCLR

External Article

Remove HTML tags from strings using the SQL Server CLR

  • Article

It is recommended that you remove all special characters and HTML formatting. This task can be handled in TSQL code, however in this case I have the opportunity to use .NET and the power of the regular expressions to manage the string. In this tip, I'll build a CLR function which cleans up a string of HTML tags and special characters. I'll use Visual Studio 2010 with C# as the programming language. Check out this tip for my solution.

2011-07-04

3,902 reads

External Article

Read and Write Binary Files in SQL Server with CLR

  • Article

You are a database developer looking for a common approach for handling read and write access to binary files. You may be a DBA wanting to read various information from binary files and collect it into tables. The code sample presented in this tip will get you started with binary file content handling in SQL Server.

2011-04-14

4,324 reads

External Article

SQL Server random numerics data generation using CLR

  • Article

You need to generate random data directly into SQL Server table columns or close to the database engine as variables or expressions. Looking at the SQL Server available functions, you notice that only RAND function offers support for random data generation. Although RAND([seed]) is a built-in function, it can only return a float value between 0 and 1, and has other limitations in regards to seed values. Because your table columns may be of various data types, and each data type may have a lower value and an upper value, you would prefer to create your custom random data generators. This is when SQL Server CLR functions come into play and provide a viable solution.

2011-03-24

3,275 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