Why Is “WHERE 1=0” Slow?
I saw a question the other day, questioning why they’re creation of temporary tables was so slow. What they were doing was (a much more complicated version of) this:...
2022-01-24 (first published: 2022-01-10)
911 reads
Blog Posts
Data Thoughts – Microsoft Exams and Simulations
G’day, I’ve based my career around Microsoft products on the Data Platform. The first product that I seriously learnt was Microsoft SQL Server back around 2000. I was lucky...
2022-01-23
12 reads
Architecture – The Perfect Enemy
When I was younger, I always wanted the perfect solution to an IT problem. I remember getting into argument after argument trying to insist upon the perfect configuration, setup,...
2022-01-21 (first published: 2022-01-10)
388 reads
Daily Coping 21 Jan 2021
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-01-21
47 reads
T-SQL Tuesday 146: Where should business logic reside?
I am trying to get started on blogging again this year…T-SQL Tuesday came in handy with a great topic. This month’s host is Andy Yun(t |b). Andy’s challenge for...
2022-01-21 (first published: 2022-01-11)
543 reads
Daily Coping 20 Jan 2022
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-01-20
40 reads
How to tell if Change Data Capture (CDC) is working as expected
I’m not sure how many of you use Change Data Capture (CDC) on your instances, but I’ve had to support it for a while now and I thought I’d...
2022-01-20
452 reads
A new chapter begins
In 2012 when I originally founded Born SQL, I never imagined I would find myself a five-time recipient of the Microsoft Data Platform MVP award, let alone be offered...
2022-01-19
28 reads
Azure DB for MySQL – Single server vs Flexible
When you start the build process for MySQL you will be shown the below screen, the question is what option would you select? It really does depend; I don’t...
2022-01-19
391 reads
Creating a new User-Defined Data Type–#SQLNewBlogger
Another post for me that is simple and hopefully serves as an example for people trying to get blogging as #SQLNewBloggers. I ran across a question on user-defined data...
2022-01-19
78 reads
Blogs
AI Helps Me with My Sloppiness
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
WITH clause gets a 26ai boost!
By way of background, a while back I did video called “My New Favourite...
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
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