Cláudio Silva

I work as Data Platform Architect.
I love performance tuning and I'm also a PowerShell lover who automates any process that needs to be done more than a couple of times.
I contribute to open-source PowerShell modules such as dbatools and dbachecks.

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2025-04-14

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The Empty Aggregate

By Steve Jones - SSC Editor

Comments posted to this topic are about the item 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;

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