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External Article

Data privacy: don’t look forward, look back

What does Amazon’s Alexa have to do with a wiretapping law from the 1960s? With all the talk about new data privacy legislation, we don’t stop to think about existing laws. Legislation like the GDPR kick-started the way the world views data privacy, and this blog post explores how existing laws are being used in new ways around the globe to enforce similar protection.

2019-07-11

SQLServerCentral Article

The Dangers When Changing Database File Names

Recently a friend had an issue with their SQL Server as a result of a file change in their SQL Server database. In this short piece, I want to highlight the dangers of making some changes to an online database that might cause an unexpected outage. This is really the same whether you are changing […]

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2019-07-09

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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