Tracy McKibben

My real name is Tracy McKibben. I’ve been working with database products for over 20 years, starting with FoxBase running on Xenix. Over the years, I’ve worked with all flavors of FoxPro, some Clipper and dBase, and starting somewhere around 1995, SQL Server. I’ve even dabbled with Oracle, though I’ve tried to block out all memories of that experience.

At present, I’m the Senior SQL Server DBA and the DBA Team Supervisor for Pearson VUE. All opinions expressed on this site are my own and do not reflect the opinions of Pearson VUE.
  • Interests: Tech, gadgets, model railroading, photography, and of course SQL Server!

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Blogs

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

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

The flight recorder: Replaying what an AI agent did on my SQL Server

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

Announcements from the Microsoft Fabric Community Conference — Barcelona 2026

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

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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

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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;

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