Articles

External Article

SQL in the City London - 13th July

SQL in the City the one day free SQL Server training event is back in London this July. Join fellow SQL Server professionals for 5 hours of technical presentations on key issues for SQL Server developers and DBAs delivered by top MVPs. The event also offers you the chance to network with users passionate about SQL Server and the chance to see the latest Red Gate tools and meet the developers who built them. Find out more and register today.

2012-06-04 (first published: )

7,499 reads

External Article

SQL VIEW Basics

SQL Views are essential for the database developer. However, it is common to see them misued, or neglected. Joe Celko tackles an introduction to the subject, but there is something about the topic that makes it likely that even the experienced developer will find out something new from reading it.

2012-06-01

5,760 reads

External Article

Maintaining SQL Server default trace historical events for analysis and reporting

I often see questions online where someone wants to find out who started a trace, when tempdb last had an autogrow event, or when the last full backup for master occurred. Since these and other events are captured by the default trace, but the default trace only keeps five 20MB rollover files by default. This means that the event you are after may no longer be there, depending on how long ago it was and how busy your server happens to be. Unfortunately, people often need to find this information well after the fact.

2012-05-30

2,914 reads

Technical Article

Database Continuous Integration 101

We talk a lot about continuous integration here on the Atlassian Dev Tools blog, and many readers are bonafide CI gurus. Now that you are integrating your application code, test code, config files and deploy scripts, are you ready to take it to the next level? An increasing number of engineering shops are starting to bring the continuous integration discipline into their database development.

2012-05-29

2,744 reads

Blogs

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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