Book Image

Advanced MySQL 8

By : Eric Vanier, Birju Shah, Tejaswi Malepati
Book Image

Advanced MySQL 8

By: Eric Vanier, Birju Shah, Tejaswi Malepati

Overview of this book

Advanced MySQL 8 teaches you to enhance your existing database infrastructure and build various tools to improve your enterprise applications and overall website performance. The book starts with the new and exciting MySQL 8.0 features and how to utilize them for maximum efficiency. As you make your way through the chapters, you will learn to optimize MySQL performance using indexes and advanced data query techniques for large queries. You will also discover MySQL Server 8.0 settings and work with the MySQL data dictionary to boost the performance of your database. In the concluding chapters, you will cover MySQL 8.0 Group Replication, which will enable you to create elastic, highly available, and fault-tolerant replication topologies. You will also explore backup and recovery techniques for your databases and understand important tips and tricks to help your critical data reach its full potential. By the end of this book, you’ll have learned about new MySQL 8.0 security features that allow a database administrator (DBA) to simplify user management and increase the security of their multi-user environments.
Table of Contents (13 chapters)
11
Advanced MySQL Performance Tips and Techniques

Creating roles and users in MySQL 8.0

Now, imagine that we need one user account with the developer role, one user account with read-only access, and two user accounts that can have read/write access.

To do this, first, we need to learn about creating roles. To create a role, use the following command:

CREATE ROLE privilege;

Let's create three roles for developer, read-only, and read-write rights:

mysql> CREATE ROLE user_dev, user_read, user_write;

Here, the role name is similar to the user account and it has both the user and host parts. Let's say role_name@host_name.

You can omit the host part to make it default to %, which means any hosts.

Now, we need to grant privileges to the roles we created, as follows:

mysql> GRANT ALL ON school.* TO 'user_dev';

mysql> GRANT SELECT ON school.* TO 'user_read';

mysql> GRANT INSERT, UPDATE, DELETE...