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DROP USER [IF EXISTS] user [, user] ... The DROP USER statement removes one or more MySQL accounts and their privileges. It removes privilege rows for the account from all grant tables.
- MySQL :: MySQL 8.4 Reference Manual :: 15.7.1.4 DROP ROLE Statement
DROP ROLE [IF EXISTS] role [, role] ... DROP ROLE removes...
- MySQL :: MySQL 8.4 Reference Manual :: 15.7.1.4 DROP ROLE Statement
16 Απρ 2024 · If DROP USER is executed on a user that does not exist, MySQL returns an error. To prevent this behavior, add the IF EXISTS statement to DROP USER: DROP USER IF EXISTS [user]; IF EXISTS outputs a warning for users that do not exist on the server. Use the SHOW WARNINGS statement to read the warning: SHOW WARNINGS;
In MySQL 5.7.8+, you can use the IF EXISTS clause to conditionally drop a user only if it exists: DROP USER [ IF EXISTS ] account_name [,account_name2]...; Code language: SQL (Structured Query Language) ( sql )
26 Σεπ 2016 · DROP USER IF EXISTS 'foo'@'localhost'; DROP USER IF EXISTS 'foo'@'%'; DROP DATABASE IF EXISTS foobar; As mentioned below: the user if not exists only works on mysql 5.7 and higher. Do not use the create user syntax below 5.7, but change the grant statement to:
16 Ιουν 2010 · MySQL lacks DROP USER IF EXISTS construct. A good workaround is to grant a harmless privilege to the user before dropping it. This will create the user if it doesn't exist, so that it can be dropped safely, like so: GRANT USAGE ON *.* TO 'username'@'localhost'; DROP USER 'username'@'localhost'; FLUSH PRIVILEGES; USAGE actually means no privilege.
You can use the IF EXISTS clause to conditionally drop a user only if the user exists. However, MySQL 5.7.8+ versions support the IF EXISTS clause. The DROP USER statement not only removes the user account, but also removes all the user’s privileges from all grant tables.
DROP ROLE [IF EXISTS] role [, role] ... DROP ROLE removes one or more roles (named collections of privileges). To use this statement, you must have the global DROP ROLE or CREATE USER privilege.
