Yes and No Questions Are Not So Simple
Joe Celko explains why questions requiring yes or no answers are more complicated than you might realize in both spoken language and computing.
Stairway to SQL Server Security Level 3: Principals and Securables
What is a SQL Server principal? And what does it get a permission on? In this stairway level, you’ll learn about the various principals that can be authorized through permissions to perform actions and access securable objects in the SQL Server instance.
The OUTPUT Command
SQL Server 2005 has added many new T-SQL commands, one of which is the OUTPUT command. Longtime SQL Server author Dinesh Asanka brings us a short look at how you can use this command.
Integrating Redgate SQL Code Guard with SonarQube
Greta Rudžioniene provides a step-by-step guide to running SQL code analysis checks, as defined by SQL Code Guard, in SonarQube, a general-purpose code quality tool that can perform continuous code analysis on a variety of languages.
A Self-Tuning Fill Factor Technique for SQL Server – Part 1
Introduction So what’s all the fuss about Fill Factor? It is a SQL Server parameter I’ve ignored for 20+ years. The main reason was/is I’ve had no idea about what value to use. There is just no documented definitive guidance. Back in April at SQL Saturday #830 - Colorado Springs, I attended two sessions by […]
Using SQL Monitor to manage a growing server estate
The State of SQL Server Monitoring report found that monitoring is key to managing large estates, and as estates continue to grow the need for a monitoring solution that is scalable is increasing. German IT Service Provider Fiducia & GAD IT AG implemented Redgate’s SQL Monitor to better manage the performance of its growing SQL Server estate.
Memories of DR testing
With the introduction of the GDPR, a lot of our prospective clients are demanding more and more information regarding data disposal, retention and usage practices. Both our new and existing clients want to look at our internal ecosystem and understand how we manage it. This means that I finally got a budget for a disaster […]
Simple SQL Change Automation Scripting: The Release Object
Once you understand the SCA data objects, it can give you a certain glow of to discover, suddenly, that SCA can do some complicated and time-consuming tasks with just a few lines of code. Phil Factor demonstrates how to get the most of SCA's Release object.
Lots of data in RAM
I remember buying my first computer after college. At the time I was working part time and in graduate studies part time. My aging high school era Apple II wasn't capable of handling the load, not to mention its 300baud modem wasn't a lot of fun. I could likely have gotten a faster modem with […]
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SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
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Cognitive Coverage
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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