SQLServerCentral Editorial

Jumping Air Gaps

There are all sorts of viruses, worms, and malware out in the world, and some of us have had to deal with them at different points in our career. SQL Slammer was particularly memorable for me, but there were plenty of non data related virus issues I've had to work on at various employers. To […]

SQLServerCentral Editorial

Enriching Your Life

As I was looking to build career goals for the new year, I think mostly about technical topics. That makes sense, given my focus and job, but I ran across an interesting thread on Hacker News that asked about skills to work on in 2020, and not necessarily technical ones. I did find it interesting […]

External Article

Implementing a Data Quality Monitoring Framework

For any Business Intelligence solution to be useful for analytical and decision-making purposes, it is imperative that the underlying data quality is good so, that reports generated are reliable to make business decisions. This article from Imran Quadri Syed walks the through steps involved to implement a successful Data Quality Monitoring framework that would validate incoming data against predefined data quality rules and capture data quality metrics.

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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