Practical SQL
A Beginner's Guide to Storytelling with Data
Paperback Engels 2022 2e druk 9781718501065Samenvatting
Practical SQL is an approachable and fast-paced guide to SQL (Structured Query Language), the standard programming language for defining, organizing, and exploring data in relational databases. Anthony DeBarros, a journalist and data analyst, focuses on using SQL to find the story within your data. The examples and code use the open-source database PostgreSQL and its companion pgAdmin interface, and the concepts you learn will apply to most database management systems, including MySQL, Oracle, SQLite, and others.*
You’ll first cover the fundamentals of databases and the SQL language, then build skills by analyzing data from real-world datasets such as US Census demographics, New York City taxi rides, and earthquakes from US Geological Survey. Each chapter includes exercises and examples that teach even those who have never programmed before all the tools necessary to build powerful databases and access information quickly and efficiently.
You’ll learn how to:
- Create databases and related tables using your own data
- Aggregate, sort, and filter data to find patterns
- Use functions for basic math and advanced statistical operations
- Identify errors in data and clean them up
- Analyze spatial data with a geographic information system (PostGIS)
- Create advanced queries and automate tasks
This updated second edition has been thoroughly revised to reflect the latest in SQL features, including additional advanced query techniques for wrangling data. This edition also has two new chapters: an expanded set of instructions on for setting up your system plus a chapter on using PostgreSQL with the popular JSON data interchange format.
Learning SQL doesn’t have to be dry and complicated. Practical SQL delivers clear examples with an easy-to-follow approach to teach you the tools you need to build and manage your own databases.
* Microsoft SQL Server employs a variant of the language called T-SQL, which is not covered by Practical SQL.
Specificaties
Lezersrecensies
Inhoudsopgave
Acknowledgments
Introduction
Chapter 1: Setting Up Your Coding Environment
Chapter 2: Creating Your First Database and Table
Chapter 3: Beginning Data Exploration with SELECT
Chapter 4: Understanding Data Types
Chapter 5: Importing and Exporting Data
Chapter 6: Basic Math and Stats with SQL
Chapter 7: Joining Tables in a Relational Database
Chapter 8: Table Design That Works for You
Chapter 9: Extracting Information by Grouping and Summarizing
Chapter 10: Inspecting and Modifying Data
Chapter 11: Statistical Functions in SQL
Chapter 12: Working with Dates and Times
Chapter 13: Advanced Query Techniques
Chapter 14: Mining Text to Find Meaningful Data
Chapter 15: Analyzing Spatial Data with PostGIS
Chapter 16: Working with JSON Data
Chapter 17: Saving Time with Views, Functions, and Triggers
Chapter 18: Using PostgreSQL from the Command Line
Chapter 19: Maintaining Your Database
Chapter 20: Telling Your Data’s Story
View the Copyright page
View the detailed Table of Contents
View the Index
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