Mustafa Elmasry

Mustafa Elmasry is Microsoft Principle database consultant working as DBA for more than +10 Years I have a very good high level of knowledge about Database Migration, Consolidation, Performance Tuning, Automation Using T-SQL, and PowerShell and so many other tasks I am working as a freelancer and I do many of projects in multiple customers (Governmental and Private Sector ) here in KSA as of now, I am working in Banking sector AS Database Consultant Engineer managing the core banking system that is hosted in SQL Server Database 8 TB and other 200 SQL Server Clusters
I am Microsoft certified 2008 and 2016 in SQL Server (2x MCTS, 2x MCTIP, MCSA, MCSE) and I am Microsoft Certified Trainer (MCT) also I am azure Certified (AZ-900, AZ-103) also I was awarded by Microsoft Azure Heroes 3 times as (Azure Content hero, Azure Community hero and Azure Mentor) for more information about my experiences and my activity for spreading the knowledge please check my web page https://mostafaelmasry.com/about-me/
  • Tagline: DB Cloud Tech
  • Interests: SQL Server , Azure , Data Engineer
  • Blog: https://mostafaelmasry.com/
  • Jobs: Independent SQL Server Consultant
  • Skills: SQL Server , Azure

All authors

All authors

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