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Technical Article

SQL Server 2019 is Here

On Monday, Sep 24, 2018, at the Ignite 2018 conference, Microsoft announced the first public preview of SQL Server 2019 (community technical preview (CTP) release of SQL Server 2.0).This new release of SQL Server is packed with many new features to improve performance, integrate your increasing volumes of corporate data, beef up security, and more.

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2018-10-30

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External Article

Extended Events Workbench

The Extended Events (or XEvents) feature has been part of SQL Server since 2008, but many database professionals struggle to get started using it. In this article, Phil Factor demonstrates several useful Extended Event sessions that measure just one thing in each. He then provides the code necessary to parse the resulting XML into something you can use.

2018-10-29

2,206 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