Freitag, 21. Oktober 2016

Mysql drop user if exists

There's not standard way to check if a MySQL user exists and based. The DROP USER statement removes one or more MySQL accounts and their. An error occurs if you try to drop an account that does not exist.

Description: you have DROP TABLE IF EXISTS and DROP DATABASE IF EXISTS, but no DROP USER IF EXISTS. MySQL can drop almost anything conditionally (e.g. databases, tables, procedures), but a user. So if you have a DB bootstrap script that . The following code imexplicitly creates the user and then drop the user.

I wrote this MySQL stored procedure to emulate DROP USER IF EXISTS (not available in MySQL). If any of the specified user accounts do not exist, ERROR 13(HY000). If an error occurs, DROP USER will still drop the accounts that do not result in an . To remove a user from MySQL, we again use the DROP command. If a user of the name testuser does not exist, then you'll receive this error: ERROR 1396 . This MySQL tutorial explains how to use the MySQL DROP USER statement with syntax and examples.


The DROP USER statement is used to remove a user . MySQL does not support create user if not exists syntax as it does with create table and create procedure. This is pretty weir as it just boils . The reason why that command exists is because —in order to. DROP USER 'test- + `thread` + '-' + `i` + . The IF EXISTS clause is a MySQL extension. If you remove a user account that doesn't exist, MySQL will issue an error. IF EXISTS clause to instruct the statement to emit . Script to create a user if the user does not already exist in MySQL.


If an unprivileged user is entere and the database exists already,. However, if an account named in a GRANT statement does not already exist, GRANT may create it under. This is also true in MySQL if you use DROP USER.


Conditionally drops the schema only if it already exists. CREATE USER, ALTER USER, DROP USER, CREATE ROLE, ALTER ROLE, DROP . Say mysql root user password is root123.

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