Azure Cosmos DB is the latest data service offering from Microsoft. Azure Cosmos DB is a super set of DocumentDB and provides a new set of capabilities. These capabilities make Azure Cosmos DB stand out from other members in the NoSQL database family.
2017-09-05
3,084 reads
In this article, Grant Fritchey looks at the need to ‘shift left’ the database and associated database testing, while keeping sensitive data secure when it is outside the production...
2017-09-04
4,570 reads
Phil Factor shows how to use the Mann-Whitney U test in SQL to to find out whether two samples come from the same distribution.
2017-09-04
4,456 reads
When you have sysadmin access, you are bound to make a big mistake in production at some point in your career - in this post Tara Kizer looks back at what hers were.
2017-09-01
4,773 reads
Have you ever gotten connectivity errors from SQL Server? Jugal Shah explains the common causes for these errors, and advises on the steps you can take to resolve them.
2017-08-31
3,542 reads
Although Azure is the obvious Cloud service to host SQL Server, Amazon Relational Database Service (RDS) for SQL Server is a good choice when your organisation uses AWS. RDS deals with maintenance and monitoring, and supports the use of PowerShell to automate routine tasks. What if a script needs to be triggered by an unscheduled event? Even in this case, RDS can be configured to run scripts to react when something like a failover happens. Laerte Junior shows how easy it is to set up Lambda functions and some PowerShell scripts to automatically synchronise agent jobs after a failover.
2017-08-30
2,895 reads
One of the most glib generalisations you can make about development work is to say that code should be liberally commented, or conversely that it should never be commented. As always, the truth is more complicated. There are many different types of comment and some types are best treated firmly with the delete key, where others are to be cherished and maintained assiduously. Even though it is hard to find two developers who agree on the topic of commenting, Michael Sorens warily sketches out the issues and the battleground.
2017-08-29
3,670 reads
Azure SQL Data Sync, which has been lingering in the Preview mode since its introduction seven years ago, no longer requires the use of the Azure classic portal; you can finally access it by using the current Azure portal. Marcin Policht steps you through the process of implementing Azure SQL Data Sync using this interface.
2017-08-28
2,868 reads
SQL was designed to be a third-generation language, expressed in syntax close to real language, because it was designed to be easy for untrained people to use. Even so, there are ways of expressing SQL Queries and data manipulation in ways that make it easier for the database engine to turn into efficient action. and easier for your colleagues to understand. Robert Sheldon homes in on data querying and manipulation and makes suggestions for team standards in SQL Coding.
2017-08-25
5,735 reads
Manvendra Singh explains how to install SQL Server Agent on SUSE Linux server, so that you can create SQL Server Jobs to schedule repetitive work.
2017-08-23
3,181 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...
Comments posted to this topic are about the item How We Handled a Vendor...
Comments posted to this topic are about the item Cognitive Coverage
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