Solving Real Problems
Today we have a guest editorial where Grant talks about being effective and practical in your world.
2020-09-17
167 reads
problem solving
Applying The Scientific Method to SQL Server Performance Tuning
A relational database is a complex machine that is asked to deal with intricate problems. When things go wrong, it usually takes knowledge, deduction and a systematic approach to track down the root core of problems and to determine the best fix, Joshua Feierman illustrates how this can be done.
2014-03-31
6,661 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 NULLAll 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