Heap Tables
In today’s blog posting I want to talk about Heap Tables in SQL Server. Heap tables are tables without a Clustered Index. A table in SQL Server can have...
2022-03-01
397 reads
Klaus Aschenbrenner
Data Page Restrictions
Today I’m talking about limitations that you have with data pages, and why there are restrictions that you will love, while you will hate other restrictions. As you learned,...
2022-03-07 (first published: 2022-02-21)
286 reads
Extent Management in SQL Server
Today I’m talking about Extent Management in SQL Server, because this is a very important topic, especially when you deal with TempDb in SQL Server. On a very high...
2022-02-28 (first published: 2022-02-14)
601 reads
Creating a distributed Service Broker application with Docker
As you might know, I have written a long time ago a book about Service Broker – a technology within SQL Server that almost nobody is aware of and...
2022-02-21 (first published: 2022-02-07)
445 reads
Data Pages – the Foundation of SQL Server
Last week we laid out the foundation for how SQL Server executes queries. I have also already talked here a little bit about pages that are buffers of 8kb....
2022-02-11 (first published: 2022-01-31)
800 reads
How SQL Server executes a Query
Beginning with today, I want to give you over the next few months a blog post series about the basics of performance tuning in SQL Server. Before we go...
2022-02-04 (first published: 2022-01-25)
1,615 reads
My new Online Training: SQL Server Query Tuning Fundamentals – German Edition
As we all know there is already a lot of information available about SQL Server related topics in English. But I’m also dealing more and more with customers who...
2021-10-18
30 reads
My new Online Training: SQL Server Query Tuning Fundamentals – German Edition
As we all know there is already a lot of information available about SQL Server related topics in English. But I’m also dealing more and more with customers who...
2021-10-18
50 reads
My new Online Training: SQL Server Query Tuning Fundamentals – German Edition
As we all know there is already a lot of information available about SQL Server related topics in English. But I’m also dealing more and more with customers who...
2021-10-18
9 reads
My new Online Training: SQL Server Query Tuning Fundamentals – German Edition
As we all know there is already a lot of information available about SQL Server related topics in English. But I’m also dealing more and more with customers who...
2021-10-18
16 reads
Blogs
Identity Columns Can’t Be Updated: #SQLNewBlogger
By Steve Jones
I’m not sure I knew identity column values could not be updated. I ran...
Rolling Back a Broken Release
By Steve Jones
We had an interesting discussion about deployments in databases and how you go forward...
A bespoke reporting solution doesn’t have to cost the earth
By ChrisJenkins
You could be tolerating limited reporting because there isn’t an off the shelf solution...
Forums
Can someone please explain what happens?
I have mentioned this several times over several years. Can someone please help me...
SELECT COUNT(DISTINCT) returns null when nothing is found instead of 0
SELECT COUNT(DISTINCT Component) AS Found FROM tblComponents WHERE(Component NOT LIKE '%[a-z]%') AND(LTRIM(RTRIM(Component)) = 'GM13622')...
Remotely Engineer Fabric Lakehouse objects: The Fabric Modern Data Platform
Comments posted to this topic are about the item Remotely Engineer Fabric Lakehouse objects:...
Question of the Day
Creating JSON III
In a SQL Server 2025 table, called Beer, I have this data:
BeerIDBeerName 1Becks 2Fat Tire 3Mac n Jacks 4Alaskan Amber 8KirinI run this code:
SELECT JSON_OBJECTAGG(
BeerID: BeerName )
FROM beer;
What are the results? See possible answers