Stairway to Database Design
A series by Joe Celko that examines the craft of designing a database to meet your needs.
Signal Waits and Resource Waits...a clarification
Signal Waits vs. Resource Waits
During my presentation at SQLSaturday#59, I spoke about the categories of wait types, such as...
Uninstalling a SQL Server Clustered Instance
I have installed and uninstalled several instances of SQL Server in the past. Today, I need to uninstall a SQL Server 2008 R2 clustered instance. I have never uninstalled a clustered instance of SQL Server before. Can you provide a how-to guide to uninstall a clustered instance of SQL Server 2008 R2?
Coding With Music
Today Steve Jones has a poll that asks about your work environment, and specifically what type of noise works best for you.
SQL Server 2005 Performance Dashboard Using SSRS
A first look at the Performance Dashboard in SQL Server 2005 by new author Robert Griffin.
3 Fundamental Questions about Data Marts...and Their Answers
A data mart provides the primary access to the data stored in the data warehouse or operational data store. It is a subset of data sourced from the data warehouse or operational data store specifically focused on a business function or set of related business functions. Read on to learn the answers to fundamental questions about data marts.
How Do I Change SSRS Report Credentials with Powershell?
Today’s script took a long time to write. The concepts are fairly simple and the resulting script is quite trivial...
Plays Well With Others – Eight Behaviors of Excellent Leaders
Last week, I talked about one of the worst type of management scenarios to work under – the micromanager. Now, let’s...
SQLServerCentral Webinar Series #4: How to Monitor your SQL Servers
You can monitor your servers with the new SQL Monitor software from Red Gate Software. MVP Brad McGehee showed how the SQLServerCentral servers are being monitored publicly. The slide decks and Q&A transcript at available.
The Need for New Technology
Do we need new technologies to handle the large scales of complex data analysis? Steve Jones thinks SQL Server can handle the load.
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