Book Image

SQL Server 2017 Integration Services Cookbook

By : Christian Cote, Dejan Sarka, David Peter Hansen, Matija Lah, Samuel Lester, Christo Olivier
Book Image

SQL Server 2017 Integration Services Cookbook

By: Christian Cote, Dejan Sarka, David Peter Hansen, Matija Lah, Samuel Lester, Christo Olivier

Overview of this book

SQL Server Integration Services is a tool that facilitates data extraction, consolidation, and loading options (ETL), SQL Server coding enhancements, data warehousing, and customizations. With the help of the recipes in this book, you’ll gain complete hands-on experience of SSIS 2017 as well as the 2016 new features, design and development improvements including SCD, Tuning, and Customizations. At the start, you’ll learn to install and set up SSIS as well other SQL Server resources to make optimal use of this Business Intelligence tools. We’ll begin by taking you through the new features in SSIS 2016/2017 and implementing the necessary features to get a modern scalable ETL solution that fits the modern data warehouse. Through the course of chapters, you will learn how to design and build SSIS data warehouses packages using SQL Server Data Tools. Additionally, you’ll learn to develop SSIS packages designed to maintain a data warehouse using the Data Flow and other control flow tasks. You’ll also be demonstrated many recipes on cleansing data and how to get the end result after applying different transformations. Some real-world scenarios that you might face are also covered and how to handle various issues that you might face when designing your packages. At the end of this book, you’ll get to know all the key concepts to perform data integration and transformation. You’ll have explored on-premises Big Data integration processes to create a classic data warehouse, and will know how to extend the toolbox with custom tasks and transforms.
Table of Contents (18 chapters)
Title Page
About the Authors
About the Reviewers
Customer Feedback

Execute complex filesystem operations with the Script task

In the previous recipe, you retrieved filenames filtered by name and extension using the Foreach File enumerator of the Foreach Loop container. Sometimes you need more precise filters. For example, you might need to retrieve files with a larger size than a predefined value. You can get the collection of the filenames that satisfy your custom criteria with the Script task.

Getting ready

There are no special prerequisites for this recipe, except, of course, SSIS 2016. In addition, you can use either your own text files for testing, or the three text files provided with the code for this chapter (Ch07_03.txt, Ch07_08.txt, and Ch07_10.txt). Note that the length of the Ch07_03.txt file is 3 bytes, the Ch07_08.txt file is 8 bytes, and the Ch07_10.txt file is 10 bytes.

How to do it...

  1. In File Explorer, right-click the Ch07_08.txt file and select Properties, as shown in the following screenshot:

  1. Note the file size, 8 bytes. Click OK.
  2. In SSDT...