John Sterrett is very active within the SQL Server community. He is a PASS Regional Mentor for the South Central Region, co-founded the West Virginia SQL Server User Group and hosted two PASS SQL Saturday events in West Virginia. John has presented at several SQL Server events including PASS SQLRally, PASS Member Summit, many PASS SQL Saturday events, code camps, and, user groups. John is a syndicated blogger at http://johnsterrett.com.

Blog Post

Query Store for Workload Replays

UPDATE: 3/16/2020The first script below was updated from setting QDS to “Read_Write” instead of “Read_Only”. Martin thank you for pointing this out in your comment below. This month’s T-SQL...

2020-03-19 (first published: )

372 reads

Blog Post

Query Store for Workload Replays

UPDATE: 3/16/2020The first script below was updated from setting QDS to “Read_Write” instead of “Read_Only”. Martin thank you for pointing this out in your comment below. This month’s T-SQL...

2020-03-11

15 reads

Blog Post

Previous SQL Server Updates

Hello everyone, this is John your Austin SQL Server Consultant here and today I am going to answer a question that comes up often so I wanted to blog...

2020-01-20 (first published: )

486 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?

See possible answers