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The value of mentoring

I’ve spent my whole career working with databases which is over 20 years and counting. I work for a great company and I love what I do. The job...

2020-08-28 (first published: )

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Blog Post

The Value of a Mentor

Something I’ve mentioned in previous career-related posts is the value of a mentor. In case it seemed more like a suggestion, let me be more direct about this: You...

2020-08-17

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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