MySQL User Permissions | Database Management

Introduction

In this project, you will learn how to retrieve and view the user permission information from the MySQL database. This project is designed to help you understand the MySQL user management and permission system, which is an essential skill for database administrators and developers.

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🎯 Tasks

In this project, you will learn:

How to access the MySQL database using the sudo command without a password
How to switch to the mysql database
How to query the permission information for a specific user, in this case, the root user

🏆 Achievements

After completing this project, you will be able to:

Understand the MySQL user management and permission system
Retrieve and view the permission information for a specific user
Apply the knowledge to manage user permissions in your own MySQL database projects

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL mysql(("`MySQL`")) -.-> mysql/BasicKeywordsandStatementsGroup(["`Basic Keywords and Statements`"]) sql(("`SQL`")) -.-> sql/BasicSQLCommandsGroup(["`Basic SQL Commands`"]) sql(("`SQL`")) -.-> sql/DataManipulationandQueryingGroup(["`Data Manipulation and Querying`"]) sql(("`SQL`")) -.-> sql/DatabaseManagementandOptimizationGroup(["`Database Management and Optimization`"]) mysql/BasicKeywordsandStatementsGroup -.-> mysql/source("`External Code Execution`") sql/BasicSQLCommandsGroup -.-> sql/select("`SELECT statements`") sql/DataManipulationandQueryingGroup -.-> sql/where("`WHERE clause`") sql/DataManipulationandQueryingGroup -.-> sql/in("`IN clause`") mysql/BasicKeywordsandStatementsGroup -.-> mysql/select("`Data Retrieval`") mysql/BasicKeywordsandStatementsGroup -.-> mysql/use_database("`Database Selection`") sql/DatabaseManagementandOptimizationGroup -.-> sql/using_indexes("`Using Indexes`") subgraph Lab Skills mysql/source -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} sql/select -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} sql/where -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} sql/in -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} mysql/select -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} mysql/use_database -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} sql/using_indexes -.-> lab-301434{{"`Exploring MySQL User Permissions`"}} end

Access MySQL and Switch to the MySQL Database

In this step, you will learn how to access the MySQL database using the sudo command without any password, and switch to the mysql database.

Start the MySQL service:

sudo service mysql start

Access the MySQL database using the sudo command:

sudo mysql

Switch to the mysql database:

USE mysql;

Query the Permission Information for the Root User

In this step, you will learn how to query the permission information for the root user with modify privileges.

Open the showGrant.sql file and add the following SQL statement:

SELECT * FROM user WHERE User = 'root' AND Host = 'localhost';

Save the showGrant.sql file.
Run the SQL script in the MySQL prompt:

SOURCE /home/labex/project/showGrant.sql;

This will display the permission information for the root user with modify privileges.

Summary

Congratulations! You have completed this project. You can practice more labs in LabEx to improve your skills.

Exploring MySQL User Permissions