Blog Post

A VR Wielding Mentee

Hello!
This post is my submission to become one of Paul Randal’s mentee(s) in 2015: http://www.sqlskills.com/blogs/paul/want-mentored/
As I write this blog post,...

2015-02-10

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Blog Post

On Failure: Getting Up

In my continuing series entitled “On Failure”, I want to talk about skiing.
I’m not a great skier. It would probably...

2015-02-16 (first published: )

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The Empty Aggregate

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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]
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;

See possible answers