Power BI and a Star Schema
I sometimes get asked from customers if they should use a star schema or should they use one large single table/flatfile for their dataset in Power BI. The answer...
2021-03-05 (first published: 2021-03-01)
1,013 reads
Blog Posts
ADF: Querying JSON documents
In my previous blog post I talked about how to read from an XML Webervice and use xpath to query the XML on the expressions side of things. You...
2021-03-04 (first published: 2021-02-26)
443 reads
Daily Coping 4 Mar 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...
2021-03-04
12 reads
How to: exec sp_help on temp tables?
Say you have a temp table and you want to see the columns names.
For example, I was trying to convert a query from using a #temp table to a...
2021-03-04 (first published: 2021-02-26)
433 reads
Microsoft Ignite Announcements 2021
Microsoft Ignite has always announced many new products and new product features, and this year was no exception. Many exciting announcements, and below I list the major data platform and...
2021-03-04
8 reads
2020 Advent of Code–Day 3
This series looks at the Advent of Code challenges. As one of my goals, I’m working through challenges. This post looks at day 3. Part 1 Day 3 was...
2021-03-03 (first published: 2021-02-24)
143 reads
Daily Coping 3 Mar 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...
2021-03-03
26 reads
Linux to Windows Authentication
As you are all very well aware Linux to Windows for access to SQL Server can be a slippery slope to doom. So I have decided to create an...
2021-03-03 (first published: 2021-02-25)
4,879 reads
Which configuration changes in SQL Server require a restart?
SQL Server is a complex beast, with many configuration options that can range from recommended to completely avoided. Since the release of SQL Server 2016, several options that were...
2021-03-03
64 reads
Automatic Sample Sizes for Statistics Updates
Looking at how SQL Server samples your data when doing auto-stats updates. Part of a series on understanding statistics, to help you achieve optimal performance of your queries on...
2021-03-02 (first published: 2021-02-24)
346 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