Stairway to T-SQL DML Level 7: Summarizing Data Using a Simple GROUP BY Clause
In this article you will be see how to group data using the simple GROUP BY clause, in order to summarize more complex data.
Truth and Demos
Today Steve Jones reminds us that we are all selling something in technology, even if it's our reputation. We ought to be truthful in our dealings with our clients.
XML-XSL Transformations in SQL Server
With the release of Master Data Services (MDS) for SQL Server 2008R2, it is now possible to perform XML transformations on the database server.
When to Break Down Complex Queries
Microsoft SQL Server is able to create very efficient query plans in most cases. However, there are certain query patterns that can cause problems for the query optimizer; this article describes four of these patterns.
Cloud Patches
The cloud changes the way that we can administer and deploy changes to our systems. Steve Jones highlights an interesting idea, and hopes we get similar techniques applied to databases in the cloud.
Managing Transaction Logs
A great article that should answer all your questions about the transaction log from MVP Gail Shaw. A must read for all DBAs.
The XML Methods in SQL Server
The XML Data type has definite uses, but the way of interrogating, retrieving, and manipulating the values of properties and attributes within XML have been so foreign to the SQL language as to be somewhat of a barrier to their use. Fortunately, Robert Sheldon has once more managed to make the subject accessible to those of us who just need to get the job done.
Day Zero with PowerShell
Learn how to get setup with PowerShell and SQLPSX from MVP Aaron Nelson, one of the experts teaching us how to use Powershell for SQL Server.
SharePoint - Subversive?
A reflective editorial on how SharePoints and other collaborative work spaces are getting used.
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
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