Testing

SQLServerCentral Article

An Example of Test-Driven Development

  • Article

Developing a database can be an trying experience, and it's ways good to see how someone else builds a design. In this new article, MVP Andy Leonard shows us how to build a database using test-driven development for a weather database.

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2010-10-29 (first published: )

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External Article

Close these Loopholes - Reproduce Database Errors

  • Article

This is the final part of Alex's ground-breaking series on unit-testing Transact-SQL code. Here, he shows how you can test the way that your application handles database-related errors such as constraint-violations or deadlocks. With a properly-constructed test-harness you can ensure that the end-user need never see the apparent gobbledegook of database system error messages, and that they are properly and robustly handled by the application.

2008-06-12

3,334 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