Normal Forms
To prevent data change anomalies, a database should be normalized. Did you know that there are 10 normal forms? In this article, Joe Celko reviews normalizing databases including commonly used normal forms.
2020-12-15
Articles
Basic Git for DBAs: Ignoring Files and Customizing Your Environment
This is the eighth article in a series on the basics of using Git. The other articles in the series are: Basic Git for DBAs: Getting Started with Git Basic Git for DBAs: Sharing Files Through GitHub Basic Git for DBAs: the Basics of Branches Basic Git for DBAs: Making Changes in GitHub Basic Git […]
2020-12-14
3,370 reads
Email Validation Simplified with Web API and SSIS
Email based validation is more than just a simple RFC check, this is where Melissa's Global Email Verification with a web-based API and SSIS delivers valuable data to SQL Server Professionals.
2020-12-14
What is a Data Catalog?
A data catalog allows an organization to discover and record the facts about its data, where that data is held and how it used. William Brewer explains the details.
2020-12-14
More On Column Order Indexes – Part 2
Continued analysis of index architecture with revised clustered index. Part 2 of Column Order Indexes
2020-12-11 (first published: 2019-04-24)
2,649 reads
Database Updates: Rolling Back and Fixing Forward
Phil Factor's take on the best ways to reverse or accelerate your way out of the problems caused by a failed database update.
2020-12-11
SQL Developer – A great tool and better ways to use it
SQL Developer is a popular free tool for working with Oracle databases. In this article Srinivasan Suresh explains several features of SQL Developer that can make you more productive.
2020-12-11
Scheduling PowerShell Using Jenkins
Introduction PowerShell is a task-based command-line shell and scripting language; it is designed specifically for system administrators and power-users, to rapidly automate the administration of multiple operating systems (Linux, OSX, and Windows) and the processes related to the applications that run on those operating systems. For system administrators (DBAs\Wintel Admins), creating PowerShell scripts is a […]
2020-12-10
4,378 reads
Deploy Database Objects to Multiple SQL Server Instances Using PowerShell
In this article we look at a PowerShell script that can help you deploy database objects to multiple SQL Server instances.
2020-12-10
More Gems from the SQL Prompt Treasure Chest
Join Microsoft MVP Grant Fritchey and Redgate's Owen Standage on a journey through the hidden treasures of SQL Prompt. Discover features of the unknown that will enable you to write, format, analyze and refactor your SQL effortlessly.
2020-12-10
Blogs
How to Clear the SSMS Cache (SSMS 21 and Later)
By SQLPals
How to Clear the SSMS Cache (SSMS 21 and Later) Updated...
The flight recorder: Replaying what an AI agent did on my SQL Server
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
Announcements from the Microsoft Fabric Community Conference — Barcelona 2026
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Forums
Let's Talk Certifications
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The Hidden Security Risks of Role Combination in SSAS Tabular
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The Empty Aggregate
Comments posted to this topic are about the item The Empty Aggregate
Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers