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How to delete or remove a MySQL user account?
To delete a MySQL user is to remove an account and its privileges from all grant tables. Only users with global CREATE USER or DELETE privileges can perform such tasks. In this tutorial, learn how to remove MySQL user accounts using the DROP USER statement.
How to add or delete a column in MySQL?
To remove or delete a column: ALTER TABLE tablename DROP COLUMN columname; Here, we will add a string column called “address” by typing: ALTER TABLE users ADD COLUMN address varchar(10); Add a TIMESTAMP column named “date” by entering the following command: ALTER TABLE users ADD date TIMESTAMP;
What can I grant a user in MySQL?
You can grant users various privileges to tables. These permissions can be any combination of SELECT, INSERT, UPDATE, DELETE, INDEX, CREATE, ALTER, DROP, GRANT OPTION or ALL.
How to delete multiple MySQL accounts at the same time?
The basic syntax for the DROP USER statement is: To delete multiple users at the same time, use the same DROP USER syntax, and add users separated by a comma and a space. Note: If you removed an existing MySQL account and want to create a new one, refer to our article on How to Create MySQL Account and Grant Privileges.
Why are MySQL users deleted in CentOS 6.2?
I have a fresh centos 6.2 with mysql in 5.1.52. Then I saw two empty user name and I deleted that then I saw 3 root user deleted that and created one like this CREATE USER ‘root’@’%’ IDENTIFIED BY ‘ ** ‘;. But when I go in as root into my phpMyAdmin now I cannot create a new database. What wrong did I do here?
How to delete all root users in MySQL?
Your problem stems from deleteing all the root users first. When you create a user using CREATE USER, it simply enters a rwo in the mysql.user table. You needed to issue this command right afterwards: CREATE USER root@localhost; GRANT ALL PRIVILEGES ON *.* TO root@localhost IDENTIFIED BY ‘whatever’;