Ready to dive into the world of SQL? Whether you're dreaming of a lucrative data career or just want a new skill under your belt, learning SQL is a...
2024-05-21
104 reads
As a SQL DBA, what do you do when a vendor application has performance problems that are code related? Server settings don’t generally seem to be an issue. Queries...
2024-05-20 (first published: 2024-05-02)
205 reads
This comic was retweeted into my timeline on Twitter (I refuse to call it X). Here’s the dialog from the comic, for those that don’t want to click through...
2024-05-20
18 reads
I loaded some built-in sample data from Wide World Importers into a Fabric warehouse. You get an option to load sample data when you create a new pipeline in...
2024-05-20 (first published: 2024-05-02)
268 reads
flichtish – adj. nervously aware how much of your self-image is based on untested assumptions about yourself – only ever guessing how you’d react to a violent thread, a...
2024-05-17
19 reads
I wrote a post recently about pruning branches in git. That’s part of the job, but the other part is removing local branches. This post looks at one way...
2024-05-17 (first published: 2024-05-01)
350 reads
he rollback plan... what to do when things go wrong to get back to where you were before the deployment or implementation. I've seen too many cases where a...
2024-05-17 (first published: 2024-05-01)
358 reads
We’re taking the roadshow across the water. Hope the plane makes it. The Redgate DevOps Roadshow comes to Ireland and the Northern UK in June. We’ll be in these...
2024-05-16
20 reads
I talked about Microsoft Fabric shortcuts in my blog post Microsoft Fabric – the great unifier (where I have updated the picture with the newest supported sources) and wanted...
2024-05-15 (first published: 2024-05-01)
439 reads
SQL aggregate functions are your go-to tools for transforming raw data into actionable insights. They condense multiple rows into single, meaningful values, making it easier to grasp the big...
2024-05-15
347 reads
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
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