Blog Post

Do More, With Less

Next week, July 22 and 23, I’ll be presenting at Redgate Summit. Summt is our smaller, focused sessions. This one is about the concept of how DevOps, or, more...

2020-07-16

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Blog Post

Comparing SSIS and Azure Data Factory

For the better part of 15 years, SQL Server Integration Services (SSIS) has been the go-to enterprise extract-transform-load (ETL) tool for shops running on Microsoft SQL Server. More recently,...

2020-07-28 (first published: )

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The Empty Aggregate

By Steve Jones - SSC Editor

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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