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Technical Article

Query Performance comparison between instances

Execute at source, and will generate an output with TSQL commands to create temp tables filled with top 50 long lasting queries from all databases.
Then execute output at destination and will do the same and show comparison of matching queries!!

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2016-12-19 (first published: )

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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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