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Who is the Best Batman in Power BI

Who is the best Batman? – A Power BI Analysis of data Introduction Who is the best Batman? We were drinking some cold beers with some friends when someone said that Pattinson was the best Batman. People started to discuss and after 2 hours, the police had to stop the fight. The discussion inspires me […]

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2022-05-09

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External Article

Flyway How-tos: a User’s Perspective

Flyway provides a database-independent way for a team to track, manage and apply database changes, while maintaining strict control of database versions. It updates a database by running a series of versioned migration scripts, in order, and keeps track of all the changes in a special "schema history" table. It sounds simple, but it is easy to derail this team discipline if you don't find the right answers to the following questions…

2022-05-09

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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