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One of the first things that should be done when managing SQL Server is to setup an appropriate backup plan in order to minimize any data loss in the event of a failure. Along with setting up a backup plan there are certain database configurations that need to be setup to ensure you are able to backup databases correctly. In this tip we will look at the different recovery models that SQL Server offers and how to choose a recovery model for your database.

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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