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    Learn SQL with MySQL: Retrieve and Manipulate Data Using SQL Commands with Ease
    Learn SQL with MySQL: Retrieve and Manipulate Data Using SQL Commands with Ease
    Learn SQL with MySQL: Retrieve and Manipulate Data Using SQL Commands with Ease
    Ebook244 pages1 hour

    Learn SQL with MySQL: Retrieve and Manipulate Data Using SQL Commands with Ease

    By Ashwin Pajankar

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    About this ebook

    This book starts with the concepts in RDBMS (Relational Database Management Systems) and SQL (Structured Query Language). The first few chapters cover the definitions and a brief explanation of all the important concepts. They also cover the installation of MariaDB and MySQL on Windows and Raspberry Pi, as well as the setup of various tools used to connect to MySQL and MariaDB server processes. We will also understand how to install sample schemas and how to use basic SQL queries. Then we move on to the SELECT query in detail. The book explores the data retrieval aspect of SQL queries in detail with the WHERE clause and NULL handling in detail. The book also explores the functions available in MySQL. Those are single row and group functions. Then we explore how to combine the data from multiple sources. The technique is known as Joins, and we will learn ANSI style and the old-style syntax for all the types of Joins.

    The last part explores the DDL and DMLs in depth. We also learn the concepts of Transactions and Constraints. The book explores how we can run the SQL queries from a Python 3 program and load a pandas DataFrame with the data from a table in a schema in the MySQL database.
    LanguageEnglish
    PublisherBPB Online LLP
    Release dateJul 17, 2020
    ISBN9789389898132
    Learn SQL with MySQL: Retrieve and Manipulate Data Using SQL Commands with Ease

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      Book preview

      Learn SQL with MySQL - Ashwin Pajankar

      CHAPTER 1

      Introduction and Installation

      Irecommend all the readers to read the preface and the table of contents. It has a lot of information about what we can expect in the book. So, if you have not read it, I recommend going through it line by line.

      In this chapter, we are going to start the exciting journey of learning SQL with widely used and adopted open-source database software MySQL and MariaDB. We will also have a look at a few essential concepts that are important before we start hands-on. Finally, we will learn in detail how to install MySQL and MariaDB on major OS platforms. So, let us start an incredible journey of learning SQL with MySQL and MariaDB.

      Structure

      We will learn the following topics in this chapter:

      Basic concepts related to Databases, DBMS, and SQL

      Hands-on with SQL using Tryit Online SQL Editor.

      MySQL and its installation on Windows

      MariaDB and installation on Windows and Linux

      Objective

      The objective of this chapter is to make the readers comfortable with the basic concepts related to the topic of the Database. Also, the readers will be able to install the MySQL and MariaDB on the different Operating Systems. Readers will also learn to use an online SQL Editor, the Tryit Online SQL Editor. All the software that we learn to install in this chapter will be used throughout the rest of the book.

      Databases, DBMS, and SQL

      A database is data collected and stored in an organized form. It can be stored, accessed, and processed in electronic format or in the paper-format too. Before the advent of computers, people and organizations used to store records in tabular forms in books and papers. These were precursors to modern relational database systems. Today, in the 21st century, we store and process almost all the databases in the electronic

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