Common Mistakes in SQL Server – Part 4
Last week we have discussed how Null Values can cause a trouble in Common Mistakes in SQL Server – Part 3. This week I would like to draw your...
2023-10-23 (first published: 2023-10-09)
930 reads
Blog Posts
Common Mistakes in SQL Server – Part 6
In SQL Server, there are various scenarios in which you may want to consider recompiling a query or a stored procedure to ensure optimal query performance. Recompilation generates a...
2023-10-23
23 reads
Speaking at #DataWeekender 6.5
Super excited to share that I have been selected to speak at Data Weekender 6.5 on Saturday, November 4, 2023. I will be presenting my session, Can Microsoft Purview...
2023-10-23
34 reads
Using the Pure Storage PowerShellSDK2 - Part 2 - Working With Data
Welcome back to the second installment of our series using the Pure Storage PowerShell SDK2. In this post, we’ll dive into working with object data using Pure Storage PowerShell...
2023-10-23 (first published: 2023-10-05)
181 reads
A New Word: Gobo
gobo – n. the delerium of having spent all day in an aesthetic frame of mind, taking photos across the city, getting lost in an art museum – which...
2023-10-20
32 reads
How to Downgrade Or Recover a SQL Server Database To A Previous Version Using SqlPackage.exe?
How to Downgrade a SQL Server Database To A Previous Version?
Upgrading a SQL Server database to a newer version is one of the core duties...
2023-10-20 (first published: 2023-10-06)
964 reads
SQL Prompt Quick Access to Helper Code
We’ve been doing some events as part of the Redgate Roadshow, and at one of the events, we had a customer ask about something that we demo’d. This post...
2023-10-20 (first published: 2023-10-02)
251 reads
The Year in Travel
Here’s my year, which is pre-populated with a couple more trips coming up in November. Those should be all, as I’ve declined to go back to the UK in...
2023-10-20
27 reads
Common Mistakes in SQL Server – Part 3
Last week we discussed advantages of recompilation in Common Mistakes in SQL Server – Part 2. This week in this article Common Mistakes in SQL Server - Part 3 I...
2023-10-18 (first published: 2023-10-02)
984 reads
Eleven chapters of my data architecture book are available
As I have mentioned in prior blog posts, I have been writing a data architecture book, which I started last November. The title of the book is “Deciphering Data...
2023-10-18 (first published: 2023-10-02)
337 reads
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