Monitoring wait stats
This post, like last week’s, is based off the presentation I did to the DBA Fundamentals virtual chapter.
The request was...
2016-02-23
185 reads
SQL In The Wild
Q&A from the DBA Fundamentals Virtual Chapter presentation
A couple weeks ago I presented to the DBA Fundamentals virtual chapter. The presentation was recorded and is available from...
2016-02-16
477 reads
Q&A from the DBA Fundamentals Virtual Chapter presentation
A couple weeks ago I presented to the DBA Fundamentals virtual chapter. The presentation was recorded and is available from...
2016-02-16
108 reads
and other pointless query rewrites
In a similar vein to last week’s blog post… I heard an interesting comment recently. “Change that Column != 2 to...
2016-02-17 (first published: 2016-02-09)
1,933 reads
and other pointless query rewrites
In a similar vein to last week’s blog post… I heard an interesting comment recently. “Change that Column != 2 to...
2016-02-09
158 reads
On the addition of useless where clauses
I remember a forum thread from a while back. The question was on how to get rid of the index...
2016-02-10 (first published: 2016-02-02)
2,419 reads
Does an index scan always read the entire index?
No.
That’s a bit short for a blog post, so let me explain. First, the difference between a seek and a...
2016-01-26
525 reads
Stop using Task Manager to check SQL’s memory usage!
There’s two fairly common questions I see on the forums around SQL Server’s memory usage. Either the question asks why...
2016-01-19
2,029 reads
Natively compiled user-defined functions
One new thing that SQL Server 2016 has added is the ability to natively compile user-defined functions. Previously, native compilation,...
2016-01-19 (first published: 2016-01-12)
4,269 reads
Book Review 2015
It’s been a few years since I wrote a review of books I’ve read, so this isn’t going to list...
2016-01-15 (first published: 2016-01-05)
1,723 reads
Blogs
The flight recorder: Replaying what an AI agent did on my SQL Server
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
Announcements from the Microsoft Fabric Community Conference — Barcelona 2026
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
Forums
Let's Talk Certifications
Comments posted to this topic are about the item Let's Talk Certifications
The Hidden Security Risks of Role Combination in SSAS Tabular
Comments posted to this topic are about the item The Hidden Security Risks of...
The Empty Aggregate
Comments posted to this topic are about the item The Empty Aggregate
Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers