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How to Use GROUP BY in SQL Server

Summarizing data in a SELECT statement using a GROUP BY clause is a very common area of difficulty for beginning SQL programmers. In Part I of this two part series, we'll use a simple schema and a typical report request to cover the effect of JOINS on grouping and aggregate calculations, and how to use COUNT(Distinct) to overcome this.

2007-08-09

5,253 reads

External Article

Reporting@Home: Delivering Dynamic Graphical Feedback to Participants

A new generation of computationally intensive scientific research projects relies on volunteers from around the world contributing idle computer time to calculate mathematical models. Many of these projects utilize a common architecture to manage the scheduling and distribution of calculations and collection of results from participants. User engagement is critical to the success of these projects, and feedback to participants illustrating their role in the project’s progress is known to increase interest and strengthen the community.

2007-08-07

2,040 reads

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A Quick Restore

By Steve Jones - SSC Editor

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Guarding Against SQL Injection at the Database Layer (SQL Server)

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Ola Hallengren Index Optimize Maintenance can we have data compression = page

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I have a quick question on Ola Hallengren Index Optimize Maintenance . Do we...

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Question of the Day

A Quick Restore

While doing some testing of an application, I wanted to reset my environment after doing some testing with this code:

USE DNRTest

BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak'
GO
/*
Bunch of stuff tested here
*/RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACE
What happens if this runs, assuming the "bunch of stuff" isn't anything affecting the instance.

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