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Microsoft SQL Server 2012 Integration Services: An Expert Cookbook

You're reading from   Microsoft SQL Server 2012 Integration Services: An Expert Cookbook Over 80 expert recipes to design, create, and deploy SSIS packages with this book and ebook

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Product type Paperback
Published in May 2012
Publisher Packt
ISBN-13 9781849685245
Length 564 pages
Edition 1st Edition
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Table of Contents (23) Chapters Close

Microsoft SQL Server 2012 Integration Services: An Expert Cookbook
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with SQL Server Integration Services 2. Control Flow Tasks FREE CHAPTER 3. Data Flow Task Part 1—Extract and Load 4. Data Flow Task Part 2—Transformations 5. Data Flow Task Part 3—Advanced Transformation 6. Variables, Expressions, and Dynamism in SSIS 7. Containers and Precedence Constraints 8. Scripting 9. Deployment 10. Debugging, Troubleshooting, and Migrating Packages to 2012 11. Event Handling and Logging 12. Execution 13. Restartability and Robustness 14. Programming SSIS 15. Performance Boost in SSIS Index

Fuzzy Transformations—how SSIS understands fuzzy similarities


Suppose that input data is a csv file with department name information and there is no guarantee that the department names are spelt consistently. So you may have names such as "Management" and "Managmnt" together in the same data file. In such cases an ordinal Lookup Transform cannot detect these similarities, because Lookup checks for terms that are completely identical. This is where we need to apply some Fuzzy operations.

SSIS has two Fuzzy Transformations, which catch fuzzy similarities between terms and help us in master data management, as follows:

  • Fuzzy Grouping: This component will create groups of data rows based on their similarity threshold

  • Fuzzy Lookup: This component will look at a reference table to find matching keywords based on a predefined similarity threshold

In this recipe, we take a look at two Fuzzy Transformations and how they can help us in real-world scenarios.

Getting ready

Create a Department table with...

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