MySQL grant revoke

GRANT ALL PRIVILEGES
ON *.*
TO ユーザ@ホスト
IDENTIFIED BY 'パスワード'
WITH GRANT OPTION;

REVOKE ALL PRIVILEGES
ON *.*
FROM ユーザ@ホスト;

http://www.rfs.jp/server/mysql/02/02.html [1]

[1] http://www.rfs.jp/server/mysql/02/02.html