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 The Applied SQL Data Analytics Workshop
  • Table Of Contents Toc
The Applied SQL Data Analytics Workshop

The Applied SQL Data Analytics Workshop - Second Edition

By : Matt Goldwasser , Upom Malik , Benjamin Johnston
4 (4)
close
close
The Applied SQL Data Analytics Workshop

The Applied SQL Data Analytics Workshop

4 (4)
By: Matt Goldwasser , Upom Malik , Benjamin Johnston

Overview of this book

Every day, businesses operate around the clock and a huge amount of data is generated at a rapid pace. Hidden in this data are key patterns and behaviors that can help you and your business understand your customers at a deep, fundamental level. Are you ready to enter the exciting world of data analytics and unlock these useful insights? Written by a team of expert data scientists who have used their data analytics skills to transform businesses of all shapes and sizes, The Applied SQL Data Analytics Workshop is a great way to get started with data analysis, showing you how to effectively sieve and process information from raw data, even without any prior experience. The book begins by showing you how to form hypotheses and generate descriptive statistics that can provide key insights into your existing data. As you progress, you'll learn how to write SQL queries to aggregate, calculate and combine SQL data from sources outside of your current dataset. You'll also discover how to work with different data types, like JSON. By exploring advanced techniques, such as geospatial analysis and text analysis, you'll finally be able to understand your business at a deeper level. Finally, the book lets you in on the secret to getting information faster and more effectively by using advanced techniques like profiling and automation. By the end of The Applied SQL Data Analytics Workshop, you'll have the skills you need to start identifying patterns and unlocking insights in your own data. You will be capable of looking and assessing data with the critical eye of a skilled data analyst.
Table of Contents (9 chapters)
close
close
Preface
7
7. The Scientific Method and Applied Problem Solving

Using Array Data Types in PostgreSQL

While the PostgreSQL data types that we have explored so far allow us to store many different types of data, occasionally we will want to store a series of values in a table. For example, we might want to store a list of the products that a customer has purchased or the employee ID numbers associated with a specific dealership. For this scenario, PostgreSQL offers the ARRAY data type, which allows us to store just that—a list of values.

Starting with Arrays

PostgreSQL arrays allow us to store multiple values in a field in a table. For example, consider the following first record in the customers table:

customer_id        | 1
title              | NULL
first_name         | Arlena
last_name          | Riveles
suffix   ...
Visually different images
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.
The Applied SQL Data Analytics Workshop
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist download Download options 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