Book Image

Learn SQL Database Programming

By : Josephine Bush
5 (1)
Book Image

Learn SQL Database Programming

5 (1)
By: Josephine Bush

Overview of this book

SQL is a powerful querying language that's used to store, manipulate, and retrieve data, and it is one of the most popular languages used by developers to query and analyze data efficiently. If you're looking for a comprehensive introduction to SQL, Learn SQL Database Programming will help you to get up to speed with using SQL to streamline your work in no time. Starting with an overview of relational database management systems, this book will show you how to set up and use MySQL Workbench and design a database using practical examples. You'll also discover how to query and manipulate data with SQL programming using MySQL Workbench. As you advance, you’ll create a database, query single and multiple tables, and modify data using SQL querying. This SQL book covers advanced SQL techniques, including aggregate functions, flow control statements, error handling, and subqueries, and helps you process your data to present your findings. Finally, you’ll implement best practices for writing SQL and designing indexes and tables. By the end of this SQL programming book, you’ll have gained the confidence to use SQL queries to retrieve and manipulate data.
Table of Contents (24 chapters)
Section 1: Database Fundamentals
Section 2: Basic SQL Querying
Section 3: Advanced SQL Querying
Section 4: Presenting Your Findings
Section 5: SQL Best Practices


If you want to only return records that have matching rows in each table you join, use an INNER JOIN. The syntax of INNER JOIN and examples will be outlined in this section.

Learning INNER JOIN syntax

To inner join two tables, use the following syntax:

SELECT column(s)
FROM table1
ON table1.column = table2.column
WHERE conditions
ORDER BY column(s);

The preceding syntax shows you how to join two tables together with an INNER JOIN. You join a column in table1 that matches a column in table2. The WHERE and ORDER BY clauses are optional. They are there to show you that the INNER JOIN syntax goes between the FROM and WHERE clauses.

The following example will help you to understand how to use...