When using a MySQL database, if a database or table is no longer needed, or a user account needs to be deleted, you need to use the delete (DROP) command. Deletion operations need to be handled with caution, because improper deletion operations may cause data loss or database damage. So how to perform deletion operations correctly?
There are two ways to delete the MySQL service:
First you need to enter the command line mode of MySQL. You can use the following command:
mysql -u 用户名 -p
Among them, -u represents the user name and -p represents the password. After executing this command, you need to enter the password of the corresponding user and press Enter after completing the input.
Then enter the following command:
DROP DATABASE 数据库名;
Among them, DROP DATABASE represents the command to delete the database, and the database name is the name of the database to be deleted. After executing this command, the database and the tables in it will be deleted.
If you want to delete a table, you need to use the following command:
DROP TABLE 表格名;
Among them, DROP TABLE represents the command to delete the table, and the table name is the name of the table to be deleted. After executing this command, the specified table and the data in it will be deleted.
If you want to delete a user account, you need to use the following command:
DROP USER 用户名;
Among them, DROP USER represents the command to delete the user account, and the user name is the user account to be deleted. name. After executing this command, the specified user account and its related permissions will be deleted.
MySQL can use a large number of visual management tools for management operations, such as Navicat, phpMyAdmin and other software, and delete operations in the visual interface More convenient.
Several issues to note:
To sum up, the MySQL deletion operation can be performed either through the SQL command line or in the visual interface, but you need to pay attention to backing up the data, operating carefully and confirming the deletion.
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