Articles

Technical Article

Introduction to the Cosmos DB Emulator

Cosmos DB delivers a wide range of advantages over traditional SQL and NoSQL-based data stores, including support for multiple consistency levels, latency and throughput guarantees, policy-based geo-fencing, automatic scaling, and multi-master replication model. However, it is a significant departure from the traditional database management and development approach that most database administrators are familiar with. Discover the offerings that you can use at no cost to gain hands-on experience with Cosmos DB.

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2019-05-21

External Article

SQL in the City Summits – US & Down Under

Redgate are inviting senior data professionals to attend one of the upcoming SQL in the City Summit events taking place in May and June. If you’re interested in learning how your business can benefit from implementing Compliant Database DevOps this event is for you. Find out who’s presenting and register for a Summit near you today.

2019-05-20 (first published: )

External Article

Testing Databases: What’s Required?

Phil Factor reviews the various types of database test that need to run during development work, what sort of test data they require, and the challenges with managing this data, and in keeping the test cell stocked with the correct database, and data, in a way that allows rapid cycles of database testing.

2019-05-20

External Article

The Silent Bug I Find in Most Triggers

I don’t have a problem with triggers. They get the job done when you need to implement business logic in a hurry, and you’re not allowed to change the application. As long as you keep the number of statements to a minimum (say, 2-3), and don’t try to do something really slow like fire up a cursor, triggers can be an efficient way to solve hard problems quickly. However, most triggers I run across have a really, really dangerous bug.

2019-05-17

Blogs

How to Clear the SSMS Cache (SSMS 21 and Later)

By

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

“What exactly did it do on my server?” is the first question a DBA...

Announcements from the Microsoft Fabric Community Conference — Barcelona 2026

By

Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...

Read the latest Blogs

Forums

Let's Talk Certifications

By Grant Fritchey

Comments posted to this topic are about the item Let's Talk Certifications

The Hidden Security Risks of Role Combination in SSAS Tabular

By Pablo Echeverria

Comments posted to this topic are about the item The Hidden Security Risks of...

The Empty Aggregate

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The Empty Aggregate

Visit the forum

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]
GO
What 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