Do Functions Stop You From Using Indexes?
If you have a function in the WHERE clause, you might have heard you can't use indexes. That's not entirely correct.
2019-01-18
3,536 reads
Articles
Logging SQL and Change-Tracking Events in EF Core
Julie Lerman introduces you to the new logging APIs in .NET Core, concentrating on SQL and change-tracking events, with a focus on providers that output to the console and the debugger.
2019-01-18
2,083 reads
Saving Data to Various Formats, Using SQL
You have many options when exporting data from a database. In this article, Phil Factor compares several methods including XML and array-in-array JSON for speed and file size.
2019-01-17
3,509 reads
Using T-SQL to Fix Bad Data in XML Documents Using FLWOR
Learn how to use T-SQL to fix contents of an XML document using FLWOR
2019-01-17
2,558 reads
Using T-SQL to find the Greatest Common Divisor (GCD) for any number of integers
In this tip we look at T-SQL code that can be used to determine the greatest common divisor for a set of integers.
2019-01-16
2,635 reads
New Preview of SQL Server Management Studio Available for Download
On September 24th Microsoft released the first Community Technical Preview for SQL Server 2019, which was CTP2.0. At the same time Microsoft pushed out a new preview for SQL Server Management Studio (SSMS) known as version 18. Now is the time to download this new preview!
2019-01-15
4,118 reads
SQL Server Logical Reads – What do they really tell us?
SQL Server trace, the most common tool DBAs use to evaluate query performance, provides the ‘logical reads’ counter on which many DBAs rely for evaluating a query’s I/O performance. In this article, we will examine this counter’s true meaning and provide examples that prove it can sometimes be quite misleading
2019-01-15
3,258 reads
Introduction to AWS Elastic Beanstalk
The AWS Elastic Beanstalk feature is a web application provisioning service that allows you to automatically scale as needed. In this article, Gerald Bauer explains how to set up and configure Elastic Beanstalks through the AWS dashboard and Visual Studio.
2019-01-14
1,264 reads
Two Things I Would Change in SSISDB Setup
I suggest these two changes to the SSISDB setup to prevent issues down the road.
2019-01-11 (first published: 2016-03-29)
5,429 reads
Manage Data Across Multiple Sources with Azure Data Studio
Azure Data Studio, now the official name of SQL Operations Studio, was released in September. The biggest news regarding the release is the extensions that are now available, as Julie Lerman describes.
2019-01-11
2,266 reads
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