Synapse Analytics and .NET for Apache Spark Example 4 - JOINS
This is a bit of a longer one, a look at how to do all the different joins and the exciting thing for MSSQL developers is that we get...
2021-01-25
12 reads
Blog Posts
Upgrading Ola Hallengren’s Maintenance Solution with dbatools
While presenting Backup Basics with Powershell and dbatools at ONDT, I mentioned a caveat with the -ReplaceExisting switch for Install-DbaMaintenanceSolution. This switch drops all of the objects installed by...
2021-01-25
195 reads
Upgrading Ola Hallengren's Maintenance Solution with dbatools
While presenting Backup Basics with Powershell and dbatools at ONDT, I mentioned a caveat with the -ReplaceExisting switch for Install-DbaMaintenanceSolution. This switch drops all of the objects installed by...
2021-01-25
12 reads
When do Statistics get updated?
Statistics objects are important for allowing the SQL Server Optimizer to make good estimates and form efficient execution plans. Related to that it's useful for us to understand when...
2021-01-25 (first published: 2021-01-18)
503 reads
Bash: ^^}: bad substitution – upgrade your Bash version (macOS)
This blog post is about a situation where you are capitalising an argument in bash and you get the following error: bash: ${state^^}: bad substitution In this example I...
2021-01-24
96 reads
Bash: “command not found” in IF statement
This blog post is about a situation where writing an IF THEN ELSE statement with variables fails with something like ./scalePREPROD.sh: line 26: [[1: command not found This was...
2021-01-23
34 reads
“They need help, we must help.” #forGarethSwan
We just finished a memorial for Gareth Swanepoel. He was an amazing person and someone I wish I’d gotten to ... Continue reading
2021-01-22 (first published: 2021-01-14)
329 reads
Daily Coping 22 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...
2021-01-22
18 reads
RIP Gareth Swanepoel and GoFundMe
Last week we lost another SQLFamily member. Gareth Swanepoel passed away on 8 Jan 2021. He was a fellow speaker, jolly fellow, and Microsoft PM. Across many years of...
2021-01-22 (first published: 2021-01-14)
806 reads
The First Data Saturday is Tomorrow
Data Saturday #2 – Guatemala is tomorrow. This is the first event on the calendar, though the second one to move from SQL Saturday over. I’m thrilled that this...
2021-01-22
30 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...
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...
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