Robert Sheldon demonstrates how to start automating data comparisons between two databases, from the Windows command line or PowerShell. With a single command, you can easily compare and sync data such as test data sets, or static data used for reference or lookup purposes.
2021-02-24
Learn about the core SQL Server concepts to build your skill set including the architecture, database design, development, administration and more.
2021-02-24
Introduction Relational database design helps to create a set of relations and tables, which are connected with each other through some defined relationships. The main purpose of relational database design is to preserve the information and minimize data redundancy. We need to follow some design guidelines for relational schemas to maintain the quality of the […]
2021-02-23
5,343 reads
In this article of the series, Pamela Mooney explains the architecture of SQL Server under the hood, including some query anti-patterns to avoid.
2021-02-23
Introduction In my last article, Discussion on Normalization and Database Design Concepts, I discussed about the normalization concepts. Here, I will take one table in SQL Server and implement different normal forms. As we move up the higher normal forms, we end up on more number of tables. Implementation of Normal Forms Let us start […]
2021-02-22
4,605 reads
When working on an SSIS project with multiple developers, a merge conflict can occur in the git repository. In this tip we'll show you how to resolve this type of conflict and provide alternative options.
2021-02-22
Making sure your SQL Servers are secured against malicious users is difficult. The United States Defense Information Systems Agency (DISA) publishes a set of guidelines for organizations securing different pieces of software that connect to the US Department of Defense’s networks (DoD). Whether you’re working with the DoD or not, these Security Technical Implementation Guides (STIGs) are a good resource to help you understand potential security vulnerabilities and mitigate them.
2021-02-22
This article walks through using Biml with 3rd party connectors to replicate external data to SQL Server in SSIS.
2021-02-19 (first published: 2019-03-21)
1,864 reads
When adding files to a filegroup, SQL Server doesn't automatically balance the data across the files immediately. See how this works and how you can speed this up.
2021-02-19 (first published: 2019-11-07)
14,273 reads
Mastering TempDB is a critical skills for SQL Server DBAs. In this article, Monica Rathbun explains the basics of TempDB including configuration.
2021-02-19
By SQLPals
How to Clear the SSMS Cache (SSMS 21 and Later) Updated...
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Comments posted to this topic are about the item Let's Talk Certifications
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Comments posted to this topic are about the item 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