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Audit Columns

One of the easiest ways to collect information about table activity is to add a series of audit columns to ... Continue reading

2021-10-11 (first published: )

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How old are those stats?

SQL Server maintains a variety of stats about all sort of performance items. Index usage (or missing indexes) Query performance Corrupt pages Disk IO performance Way more than I...

2021-10-11 (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?

See possible answers