SQLBalls

Lesson 2: Internal Structures, Vardecimal, & Row Compression

Welcome to Lesson 3 on Compression and welcome back Dear Reader. I want...

2011-10-17

1,102 reads

Day 6: Friday PASS Summit 2011 Keynote Live

Hello Dear Reader! Welcome to the final day of the PASS Summit and the Keynote address by Dr. David J...

2011-10-14

473 reads

How to Clear the SSMS Cache (SSMS 21 and Later) Updated...

“What exactly did it do on my server?” is the first question a DBA...

Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...

Comments posted to this topic are about the item Let's Talk Certifications

Comments posted to this topic are about the item The Hidden Security Risks of...

Comments posted to this topic are about the item 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]
GO

What 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;