Articles

External Article

Close these Loopholes - Reproduce Database Errors

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

External Article

Security Overview for Database Administrators

SQL Server 2008 is secure by design, default, and deployment. Microsoft is committed to communicating information about threats, countermeasures, and security enhancements as necessary to keep your data as secure as possible. This paper covers some of the most important security features in SQL Server 2008. It tells you how, as an administrator, you can install SQL Server securely and keep it that way, even as applications and users make use of the data stored within.

2008-06-12

3,272 reads

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Question of the Day

Getting the Average

I have this data in the dbo.Commission table in a SQL Server 2022 database.

salesperson commission
Brian       12
Brian       16
Andy        7
Andy        14
Andy        21
Steve       20
Steve       NULL
All the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
     , AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
 FROM commission
 GROUP BY SalesPerson
GO
What average commission is calculated for Steve?

See possible answers