Gail Shaw's SQL Server Howlers
For the latest in our series of SQL Server Howlers, we asked Gail Shaw which common SQL Server mistakes and misunderstandings lead to tearful DBAs and plaintive cries for help on the forums.
2012-09-10
3,694 reads
Simple-Talk Series
Confessions of a DBA: My Worst Mistake
To kick off a series of DBA worst case scenarios, we asked Phil Factor to confess. He came up with a classic: The mistaken belief that a backup WITH CHECKSUM guaranteed a good backup that could be restored, and the ensuing disaster.
2012-02-02
5,280 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