Rocky Mountain Tech Trifecta on March 5
I will be attending and speaking at the Rocky Mountain Tech Trifecta in downtown Denver on March 5, 2011. This...
2011-03-01
502 reads
SQLDIY: Alert On Blocking Chains
Continuing the SQLDIY monitoring project we will take a look at tracking blocking events. I actually received a request to...
2011-03-01
2,869 reads
Firefox and NTLM Authentication
By default Firefox doesn’t pass through NT credentials, not a big deal when you’re browsing Amazon by a big pain...
2011-03-01
942 reads
March Question: What’s Your Biggest SQL Server Performance Headache?
As DBAs, we have all received a phone call from a database user, asking why the database is so slow....
2011-03-01
604 reads
2011 MVP Summit – Day 1
I’m glad I went running this morning. It’s been a long day, in and out of sessions and meetings all...
2011-03-01
397 reads
How to Get a Head Start on Performance Tuning
The problem with performance tuning is that it is commonly considered as secondary to the task at hand rather than...
2011-03-01
729 reads
SSRS – Creating and Using Shared Schedules – Part 1
As you will see by the dates in my screenshots, I wrote them quite a while back while touring the...
2011-02-28
2,391 reads
Don’t Be Afraid of Windows Failover Clustering!
One of the more exciting features in SQL Server code-named “Denali” (which is the current official name for the next...
2011-02-28
1,874 reads
My Upcoming Schedule, Come Get Your Learn On!
It’s official, I’ll be speaking at SQLSaturday #63 April 2nd. It is something near and dear to my heart, solid state storage....
2011-02-28
1,356 reads
Memory Consumed By SQLServer
Have you wondered how much memory was being consumed by SQL Server? Have you wondered if there was a way to find out that information from a tSQL command?...
2011-02-28
16 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