Book Image

Getting Started with MariaDB

By : Daniel Bartholomew
Book Image

Getting Started with MariaDB

By: Daniel Bartholomew

Overview of this book

MariaDB is a database that has become very popular in the few short years that it has been around. It does not require a big server or expensive support contract. It is also powerful enough to be the database of choice for some of the biggest and most popular websites in the world, taking full advantage of the latest computing hardware available. From installing and configuring through basic usage and maintenance, each chapter in this revised and expanded guide leads on sequentially and logically from the one before it, introducing topics in their natural order so you learn what you need, when you need it. The book is based on the latest release of MariaDB and covers all the latest features and functions. By the end of this beginner-friendly book, not only will you have a running installation of MariaDB, but you will have practical, hands-on experience in the basics of how to install, configure, administer, use, and maintain it.
Table of Contents (16 chapters)
Getting Started with MariaDB Second Edition
About the Author
About the Reviewers
MariaDB Next Steps


Just as data sometimes needs to be updated, sometimes it also needs to be removed from a database table. People get new jobs, products are discontinued, and so on. When the time comes to remove something from a table in our database, we use the DELETE command. The basic syntax is as follows:

DELETE FROM <table_name> [WHERE <where_conditions>];

As with UPDATE statements, the WHERE part of a DELETE statement is optional, but if we leave it off, the command will delete every row in the table, which is even more catastrophic than leaving off the WHERE part in an UPDATE statement, if such a thing is possible. Make it a habit to always include it.

As an example, let's delete the Spencer Kimball employee:

DELETE FROM employees
WHERE givenname="Spencer" AND surname="Kimball"; 

As with the UPDATE examples, the WHERE clause is looking up the rows to delete by givenname and surname. A more precise method is to first look up the record to discover its primary key, and then to...