DROP USER - MySQL

Overview

DROP USER permanently removes a user account from the MySQL database server. It revokes all permissions and access privileges associated with the user and deletes them from the user table.

Syntax

DROP USER [IF EXISTS] <username>[, <username>] ...

Parameters:

  • username: The name of the user to be dropped. Multiple users can be specified by separating them with commas.
  • IF EXISTS: An optional clause that prevents an error if the specified user does not exist.

Options/Flags

None.

Examples

Simple example: Drop a single user.

DROP USER test_user;

Complex example: Drop multiple users, handling non-existent users.

DROP USER IF EXISTS user1, user2, user3;

Common Issues

  • Incorrect username: Ensure the specified username exists and is spelled correctly.
  • Privileged user: The user executing the command must have the DROP USER privilege.

Integration

Revoking privileges: If the user being dropped has existing privileges, they should be revoked manually before executing DROP USER to avoid permission errors.

Scripting: DROP USER can be used in conjunction with scripting tools to automate user management tasks, such as creating and removing users based on specific criteria.

  • CREATE USER: Creates a new user account.
  • ALTER USER: Modifies an existing user account.
  • GRANT: Grants permissions to a user.
  • REVOKE: Revokes permissions from a user.