Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Data Analysis Using SQL and Excel
  • Table Of Contents Toc
Data Analysis Using SQL and Excel

Data Analysis Using SQL and Excel - Second Edition

By : Gordon S. S. Linoff
close
close
Data Analysis Using SQL and Excel

Data Analysis Using SQL and Excel

By: Gordon S. S. Linoff

Overview of this book

Data Analysis Using SQL and Excel, 2nd Edition shows you how to leverage the two most popular tools for data query and analysis—SQL and Excel—to perform sophisticated data analysis without the need for complex and expensive data mining tools. Written by a leading expert on business data mining, this book shows you how to extract useful business information from relational databases. You'll learn the fundamental techniques before moving into the "where" and "why" of each analysis, and then learn how to design and perform these analyses using SQL and Excel. Examples include SQL and Excel code, and the appendix shows how non-standard constructs are implemented in other major databases, including Oracle and IBM DB2/UDB. The companion website includes datasets and Excel spreadsheets, and the book provides hints, warnings, and technical asides to help you every step of the way. Data Analysis Using SQL and Excel, 2nd Edition shows you how to perform a wide range of sophisticated analyses using these simple tools, sparing you the significant expense of proprietary data mining tools like SAS.
Table of Contents (18 chapters)
close
close
Lock Free Chapter
1
Foreword
17
EULA

Exploring the Products

This section explores the purchases database from the perspective of understanding the products in the orders.

Scatter Plot of Products

The Products table contains about 4,000 products, which are classified into nine product groups. Chapter 3 analyzed the orders and determined that the most popular group is BOOK.

Two of the most interesting features of products are price and popularity. Scatter plots are a good way to visualize this information, with different groups having different shapes and colors. The following query extracts the information for the scatter plot:

SELECT p.ProductId, p.GroupName, p.FullPrice, olp.numorders
FROM (SELECT ol.ProductId, COUNT(DISTINCT ol.OrderId) as numorders
      FROM OrderLines ol
      GROUP BY ol.ProductId
     ) olp JOIN
     Products p
     ON olp.ProductId = p.ProductId

This is a basic JOIN and aggregation query, providing the number of orders a product is in as well as its full price.

The scatter plot in Figure 9-1

Full price versus Number of Orders graph; both log scale. Several overlapping, scattered points for Calendar, Book, Game, Artwork, Apparel, Other, Freebie, Occasion.
...
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Data Analysis Using SQL and Excel
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon