DBA 101: Tuning lookups
Sometimes it helps to go back to the basics and indexing is always a great topic. SQL Server has a...
2017-05-09 (first published: 2017-04-27)
3,119 reads
Confessions of a Microsoft Addict
Query tuning 101: What’s a probe residual?
Query tuning is an important process that will probably never go away and sharpening your tuning skills is always a...
2017-04-26 (first published: 2017-04-17)
3,342 reads
DBA 101: Comparing two SQL plans
Simple post today: How to compare two plans in SSMS.
This task is a task that is often done by a...
2017-04-18 (first published: 2017-04-14)
2,053 reads
Way Off-topic: Why cutting the cord was right for me
FYI: This one is way off topic so don’t expect to find any fancy SQL tips here.
I did it. I...
2017-04-14
498 reads
T-SQL Tuesday: Finding issues with your query plan
This is my first time blogging with a T-SQL Tuesday topic. If you follow my blog you’ve probably noticed that...
2017-04-11
496 reads
Wait Stats, Here and gone again?
Microsoft recently introduced a handy new feature to query plans: waitstats. That’s right, you can get actual runtime waitstats for...
2017-04-05
508 reads
New SSMS bug?
It seems like SSMS has seen better days. Many developers I have worked with recently complain about Out of Memory...
2017-03-22
638 reads
DBA 101: File growth
Maintaining a database is an important job of the DBA role. One of the many maintenance tasks is ensuring that...
2017-03-03
480 reads
DBA 101: Unique Constraint vs Unique Index
Designing a rock solid application and database can be difficult. New features and overlapping features mean that you’re able to...
2017-03-21 (first published: 2017-03-03)
3,574 reads
DBA 101: What you may be missing with “Missing indexes”
If you’ve read my blog, I’m sure by now you know that I have no love for GUI tools. I...
2017-02-15 (first published: 2017-02-08)
3,382 reads
Blogs
How to Clear the SSMS Cache (SSMS 21 and Later)
By SQLPals
How to Clear the SSMS Cache (SSMS 21 and Later) Updated...
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...
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