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


In this chapter, you learned about the types of table joins, including INNER, OUTER, FULL, and advanced joins, such as the cross, natural, and self joins.

Additionally, you learned about set theory and how to combine queries using operators such as UNION and UNION ALL. You also learned about intersection and differences when combining queries.

Lastly, you learned about optimizing your query when it contains multiple tables, using the EXPLAIN operator, and you saw how you could either change your query or add indexes to improve your query.

In the next chapter, you will learn how to modify data in tables. This includes learning how to use INSERT, UPDATE, and DELETE statements. You will also learn about SQL transactions, which help to better control the modification of data. Additionally, you will learn how to modify table structures.