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Anthony is a Principal Field Solutions Architect at Pure Storage as well as a Pluralsight Author, and a Microsoft Data Platform MVP. Anthony designs solutions, deploys the technology, and...

2020-09-06

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Adaptive Joins in SQL Server

SQL Server 2017 (compatibility 140) brought us many Intelligent Query Processing (IQP), formally known as Adaptive Query Processing, features that improve performance on workloads straight out of the box...

2020-09-02

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Blog Post

Adaptive Joins in SQL Server

SQL Server 2017 (compatibility 140) brought us many Intelligent Query Processing (IQP), formally known as Adaptive Query Processing, features that improve performance on workloads straight out of the box...

2020-09-10 (first published: )

1,646 reads

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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