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Expert Data Modeling with Power BI

You're reading from   Expert Data Modeling with Power BI Get the best out of Power BI by building optimized data models for reporting and business needs

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Product type Paperback
Published in Jun 2021
Publisher Packt
ISBN-13 9781800205697
Length 612 pages
Edition 1st Edition
Languages
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Author (1):
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Soheil Bakhshi Soheil Bakhshi
Author Profile Icon Soheil Bakhshi
Soheil Bakhshi
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Table of Contents (18) Chapters Close

Preface 1. Section 1: Data Modeling in Power BI
2. Chapter 1: Introduction to Data Modeling in Power BI FREE CHAPTER 3. Chapter 2: Data Analysis eXpressions and Data Modeling 4. Section 2: Data Preparation in Query Editor
5. Chapter 3: Data Preparation in Power Query Editor 6. Chapter 4: Getting Data from Various Sources 7. Chapter 5: Common Data Preparation Steps 8. Chapter 6: Star Schema Preparation in Power Query Editor 9. Chapter 7: Data Preparation Common Best Practices 10. Section 3: Data Modeling
11. Chapter 8: Data Modeling Components 12. Chapter 9: Star Schema and Data Modeling Common Best Practices 13. Section 4: Advanced Data Modeling
14. Chapter 10: Advanced Data Modeling Techniques 15. Chapter 11: Row-Level Security 16. Chapter 12: Extra Options and Features Available for Data Modeling 17. Other Books You May Enjoy

Splitting column by delimiter

One of the most common transformation steps is Split column by delimiter. In many cases, we may need to split a column by a delimiter, such as when we have people's full names in our data. However, the business needs to have separate First Name, Middle Name, and Last Name columns. Let's look at an example. In the previous section, we converted the OrderDateTime column's type into Date. But what if the business requires us to analyze the Internet Sales data at both the Time and Date levels? We can do many things to satisfy this new requirement, such as the following:

  • Create a new Time table, which can be done either using DAX (we discussed this in Chapter 2, Data Analysis eXpressions and Data Modeling, in the under Creating a Time dimension with DAX section) or within the Power Query Editor.
  • Split the OrderDateTime column into two columns – one Date column and one Time column.
  • Create a relationship between the Time...
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