SQLServerCentral Editorial

The Wild Fringes of SQL Server Development

We can now clearly see two opposing trends in the way SQL Server is being used in applications. The dumb database brigade regards SQL Server as simply a 'data dump'. The 'database fanatics' think SQL Server on its own can meet the needs of all but the most demanding applications. Can these opposing trends be reconciled? Tony Davis would like to think so.

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SQL Server Index Basics

Given the fundamental importance of indexes in databases, it always comes as a surprise how often the proper design of indexes is neglected. It often turns out that the programmer understands detail, but not the broad picture of what indexes do. Bob Sheldon comes to the rescue with a simple guide that serves either to remind or educate us all!

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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