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Learning Tableau

Learning Tableau

By : Joshua N. Milligan
3.8 (22)
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Learning Tableau

Learning Tableau

3.8 (22)
By: Joshua N. Milligan

Overview of this book

If you want to understand your data using data visualization and don't know where to start, then this is the book for you. Whether you are a beginner or have years of experience, this book will help you to quickly acquire the skills and techniques used to discover, analyze, and communicate data visually. Some familiarity with databases and data structures is helpful, but not required.
Table of Contents (13 chapters)
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8
8. Adding Value to Analysis – Trends, Distributions, and Forecasting
12
Index

An overview of advanced fixes for data problems


In addition to the techniques shown in the previous sections, there are some additional possibilities for dealing with data structure issues. It is outside the scope of this book to develop these concepts fully. However, given some familiarity with these approaches, you broaden your ability to deal with challenges as they arise:

  • Custom SQL: This can be used in data connection to resolve some data problems. Custom SQL is not an option for all data sources but is for many relational databases and for legacy JET driver connections. Consider a custom SQL script that takes the wide table of country populations mentioned earlier in this chapter and restructures it into a tall table:

    SELECT [Country Name],[1960] AS Population, 1960 AS Year
    FROM Countries
    
    UNION ALL
    
    SELECT [Country Name],[1961] AS Population, 1961 AS Year
    FROM Countries
    
    UNION ALL 
    
    SELECT [Country Name],[1962] AS Population, 1962 AS Year
    FROM Countries
    ...
    ...

    It might be a little...

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