Be straight, just do it.
MySQL
MySQL is a SQL Database.
To connect to a MySQL Database you need:
- The server address
- A username
- A password
- A database
Admin the MySQL
To enter the admin console you have 2 options.
mysql
As root, use mysql:
mysql
As user:
mysql -u=my_username -p
-p means a password is required, you need to have a user account on the
MySQL server to use it.
To exit the shell, use:
exit;
MySQL Workbench
A very good tool you can download with a GUI to remote control any MySQL
server.
Using your user account you can manage everything with few clicks.
Users
Create a user
When you create a user account, it doesn't have any right, you have to add them
to use a database or anything.
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
% as domain allow a connexion from anywhere
localhost as domain restrict the usage to a local connexion only.
Grant a user
GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';
FLUSH PRIVILEGES;
Grant Different User Permissions
Common possible permissions users can enjoy.
- ALL PRIVILEGES - as we saw previously, this would allow a MySQL user full access to a designated database (or if no database is selected, global access across the system)
- CREATE - allows to create new tables or databases
- DROP - allows to them to delete tables or databases
- DELETE - allows to delete rows from tables
- INSERT - allows to insert rows into tables
- SELECT - allows to use the SELECT command to read through databases
- UPDATE - allow to update table rows
- GRANT OPTION - allows to grant or remove other users’ privileges
You can use this template to grant a permission to a user:
GRANT type_of_permission ON database_name.table_name TO 'username'@'localhost';
FLUSH PRIVILEGES;
Update a password
ALTER USER 'user-name'@'localhost' IDENTIFIED BY 'NEW_USER_PASSWORD';
FLUSH PRIVILEGES;
Delete a user
DROP USER 'user'@'localhost';
Databases
Add a database to a specific user
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
CREATE DATABASE my_database;
GRANT ALL PRIVILEGES ON my_database TO 'newuser'@'localhost';
Delete a database
DROP DATABASE db_name;
Alternative:
DROP SCHEMA db_name;
Both commands do the same.
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