Cláudio Silva

I work as Data Platform Architect.
I love performance tuning and I'm also a PowerShell lover who automates any process that needs to be done more than a couple of times.
I contribute to open-source PowerShell modules such as dbatools and dbachecks.

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Blog Post

TSQL Tuesday

This month’s (#127) T-SQL Tuesday is brought by Kenneth Fisher (B | T) and he asked about Non SQL Tips and tricks. As a Windows user I know there...

2020-06-09

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Blog Post

More PowerShell Remoting coverage in dbatools

Starting on dbatools version 1.0.31 we introduced better coverage for commands that make use of PowerShell Remoting. Which commands? Commands like Get-DbaComputerCertificate, Get-DbaPrivilege, Get-DbaClientAlias, just to mention a few...

2019-08-29 (first published: )

1,332 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?

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