As a part of my DBA activities, I do a lot of SQL Server installations every week. Most of the time, I install the instance with the default collation. A collation is a configuration setting in SQL Server that determines how the database engine should read the data. SQL Server has huge list of collations […]
2022-12-26 (first published: 2020-08-03)
24,691 reads
I was working on one of my clients server recently. This was during a normal maintenance monthly activity to reboot the database server every first weekend. I rebooted the machine, and as per the defined steps, I checked the SQL services after the reboot to ensure they were up. I verified all SQL Services and […]
2020-10-05
4,655 reads
Recently I was installing SQL Server 2017 and I could not believe a simple installation took up my whole day. I was installing an instance on one newly built Windows 2012 R2 server. After clicking next a few times, I got an error: a rule failure, for KB2919355. I downloaded the KB2919355 as mentioned in […]
2020-09-14
8,407 reads
Learn how to correct an error that is overloading SCOM by fixing an SPN.
2020-09-10
8,211 reads
Finally, two important SQL Server recommended settings have been introduced during the installation process. These are the settings that every DBA (should) change after every single installation. The settings are MaxDOP and Max Memory. This article looks at each of these settings and how they are presented during installation. MaxDOP When an instance of SQL […]
2020-09-01
10,373 reads
A failed SQL Server Service Pack upgrade is fixed with a trace flag.
2020-07-27
5,806 reads
2020-07-16
5,770 reads
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
By way of background, a while back I did video called “My New Favourite...
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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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