SAN and NAS protocols and how they impact SQL Server
Discusses the various SAN and NAS protocols (FC, iSCSI, NFS) and how choosing one over the other can impact your SQL Server Performance.
2015-07-24 (first published: 2012-04-24)
18,325 reads
Gregory Jackson
- Interests: Photography, Cooking, Playing Chess Poorly, Fly Fishing and Other Outdoor activities, playing with my kids.
RAID and Its Impact on your SQL Performance
This article attempts to explain RAID's impact on SQL performance.
2014-05-16 (first published: 2012-05-01)
38,265 reads
Correlated Joins Using "Apply"
Discusses the use of the newly introduced APPLY Statement in SQL Server 2005
2009-02-27 (first published: 2008-06-16)
25,014 reads
The Cost of Function Use In A Where Clause
Discusses Index Selection impact when functions are wrapped around WHERE clause filtering columns
2008-02-28
16,065 reads
A Reporting System Architecture
This article describes one method of implementing a reporting system in SQL Server 2005
2008-01-21
14,267 reads
Who Cares about FillFactor?
New Author! The first of two articles this week on fill factors, this article looks at the impact fill factor can have on performance and shows you the key tools and counters you use to assess the impact of changes to fill factor.
2003-11-19
25,985 reads
Blogs
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...
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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
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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] 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