SQL Primer: An Accelerated Introduction to SQL Basics - Softcover

Batra, Rahul

Softcover

ISBN 10: 1484235754 ISBN 13: 9781484235751

Publisher: Apress, 2018

Synopsis

Build a core level of competency in SQL so you can recognize the parts of queries and write simple SQL statements. SQL knowledge is essential for anyone involved in programming, data science, and data management. This book covers features of SQL that are standardized and common across most database vendors. You will gain a base of knowledge that will prepare you to go deeper into the specifics of any database product you might encounter. 

Examples in the book are worked in PostgreSQL and SQLite, but the bulk of the examples are platform agnostic and will work on any database platform supporting SQL. Early in the book you learn about table design, the importance of keys as row identifiers, and essential query operations. You then move into more advanced topics such as grouping and summarizing, creating calculated fields, joining data from multiple tables when it makes business sense to do so, and more. Throughout the book, you are exposed to a set-based approachto the language and are provided a good grounding in subtle but important topics such as the effects of null value on query results.

 

With the explosion of data science, SQL has regained its prominence as a top skill to have for technologists and decision makers worldwide. SQL Primer will guide you from the very basics of SQL through to the mainstream features you need to have a solid, working knowledge of this important, data-oriented language.

What You'll Learn

• Create and populate your own database tables
  
• Read SQL queries and understand what they are doing
  
• Execute queries that get correct results
  
• Bring together related rows from multiple tables
  
• Group and sort data in support of reporting applications
• Get a grip on nulls, normalization, and other key concepts
• Employ subqueries, unions, and other advanced features

Who This Book Is For

Anyone new to SQL who is looking for step-by-step guidance toward understanding and writing SQL queries. The book is aimed at those who encounter SQL statements often in their work, and provides a sound baseline useful across all SQL database systems. Programmers, database managers, data scientists, and business analysts all can benefit from the baseline of SQL knowledge provided in this book.

About this title

About the Author

​Rahul Batra was first introduced to programming in 1996 with GWBASIC, but he did not seriously foray into programming until 2001 when he started learning C++. Along the way, Rahul dabbled in many other languages such as C, Ruby, Perl, Python, and Lisp. He has worked with databases such as PostgreSQL, Sybase ASA, and SQLite. He is passionate about sharing knowledge, especially with those who are just starting out. Rahul currently lives and works in Gurgaon, India.

Examples in the book are worked in PostgreSQL and SQLite, but the bulk of the examples are platform agnostic and will work on any database platform supporting SQL. Early in the book you learn about table design, the importance of keys as row identifiers, and essential query operations. You then move into more advanced topics such as grouping and summarizing, creating calculated fields, joining data from multiple tables when it makes business sense to do so, and more. Throughout the book, you are exposed to a set-based approachto the language and are provided a good grounding in subtle but important topics such as the effects of null value on query results.

 

With the explosion of data science, SQL has regained its prominence as a top skill to have for technologists and decision makers worldwide. SQL Primer will guide you from the very basics of SQL through to the mainstream features you need to have a solid, working knowledge of this important, data-oriented language.

What You'll Learn:

• Create and populate your own database tables
  
• Read SQL queries and understand what they are doing
  
• Execute queries that get correct results
  
• Bring together related rows from multiple tables
  
• Group and sort data in support of reporting applications
• Get a grip on nulls, normalization, and other key concepts
• Employ subqueries, unions, and other advanced features

Edition details

• Publisher: Apress
• Publication date: 2018
• Language: English
• ISBN 10: 1484235754
• ISBN 13: 9781484235751
• Binding: Paperback
• Edition number: 1
• Number of pages: 211