Extent Management in SQL Server
Today I’m talking about Extent Management in SQL Server, because this is a very important topic, especially when you deal with TempDb in SQL Server. On a very high...
2022-02-28 (first published: 2022-02-14)
611 reads
Blog Posts
How can a table with 0 records use so much space?
Just like that puppy you got during the pandemic, your databases hunger for more. And they grow. And occasionally make a mess. I’ll stop the analogy. Anyhow, it’s worthwhile...
2022-02-28
211 reads
Recipe 5: Killing blocking SPIDs
Welcome to the latest recipe of this Extended Events cookbook! You will find the first blog post of the series here and you can browse all recipes with the...
2022-02-28
75 reads
Recipe 6: Auditing Successful Logins
Welcome to a new recipe of this Extended Events cookbook! You will find the first blog post of the series here and you can browse all recipes with the...
2022-02-28
42 reads
SQL Server Execution Plan - Displays Estimated and Actual number of rows
This article focuses on getting the Displays Estimated and Actual number of Rows from the SQL Server Execution Plan. Read More
2022-02-28 (first published: 2022-02-16)
564 reads
T-SQL Linting in an Azure Devops Build Pipeline
Linting is a process where a code analyzer is run to find programmatic errors, bugs, “stylistic constructs” or anti-patterns. For example, in Python there are specific modules that help...
2022-02-28
42 reads
Published Azure Arc-Enabled Data Services Revealed - Second Edition
I’m super proud to announce that Ben E. Weissman and I have published Azure Arc-Enabled Data Services Revealed - Second Edition available now at Apress and your favorite online...
2022-02-26
37 reads
Daily Coping 25 Feb 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...
2022-02-25
27 reads
DirectQuery to Power BI Datasets
A new feature has been added to the Power BI Desktop toolset and it’s a very nice one. The official name is “DirectQuery for PBI datasets and AS”. It...
2022-02-25
58 reads
OLTP Star, Snowflake, and Galaxy Schemas
This is part of a series on my preparation for the DP-900 exam. This is the Microsoft Azure Data Fundamentals, part of a number of certification paths. You can...
2022-02-25 (first published: 2022-02-09)
691 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