Kalen Delaney

Kalen Delaney has been working with SQL Server for over 30 years, and is one of the world's most respected authorities on SQL Server and a much sought after trainer and speaker. Her book on "SQL Server Internals" is consistently cited as a must-read for aspiring SQL Server professionals.

In-Memory OLTP eBook Download

SQL Server Internals: In-Memory OLTP

In this book, Kalen Delaney explains how the 2016 In-Memory OLTP engine works, how it stores and manipulates data, and how, even with all data stored in memory and no locking or latching, it can still guarantee the ACID properties of all transactions.

(1)

You rated this post out of 5. Change rating

2023-04-28 (first published: )

1,013 reads

SQLServerCentral Article

SQL Server Concurrency: Locking, Blocking and Row Versioning

Your application can have impeachable indexes and queries, but they won't help you if you can't get to your data because another application has it locked. That's why every DBA and developer must understand SQL Server concurrency and how to troubleshoot excessive blocking or deadlocking. Kalen Delaney's book is your guide.

(2)

You rated this post out of 5. Change rating

2013-08-26

5,172 reads

SQL Server Concurrency eBook cover

SQL Server Concurrency: Locking, Blocking and Row Versioning

Your application can have impeachable indexes and queries, but they won't help you if you can't get to your data because another application has it locked. That's why every DBA and developer must understand SQL Server concurrency and how to troubleshoot excessive blocking or deadlocking. Kalen Delaney's book is your guide.

You rated this post out of 5. Change rating

2012-10-02

3,672 reads

Blogs

Learn Better: Pause to Review More

By

If you want to learn better, pause more in your learning to intentionally review.

Azure SQL Managed Instance Next-Gen: Bring on the IOPS

By

If you’ve used Azure SQL Managed Instance General Purpose, you know the drill: to...

SQL, MDX, DAX – the languages of data

By

Ramblings of a retired data architect Let me start by saying that I have...

Read the latest Blogs

Forums

Two foreign keys to the same table. Can't cascade deletes.

By FunkyDexter

Not sure if this is really a relational theory question but it seems about...

Connecting Power BI to SSAS and effective user not working

By Paul Hernández

Hi everyone, Below is a consolidated summary of what we validated Architecture & data...

High Availability setup - has anyone seen this method?

By Paul Lancaster

Hi all, I recently moved to a new employer who have their HA setup...

Visit the forum

Question of the Day

Encoding URLs

I have this data in a SQL Server 2025 table:

CREATE TABLE Response
( ResponseID INT NOT NULL CONSTRAINT ResponsePK PRIMARY KEY
, ResponseVal VARBINARY(5000)
)
GO
If I want to get a value from this table that I can add to a URL in a browser, which of these code items produces a result I can use?

See possible answers