Syntax:
REVOKE priv_type [(column_list)] [, priv_type [(column_list)]] ...
    ON [object_type] {tbl_name | * | *.* | db_name.*}
    FROM user [, user] ...

REVOKE ALL PRIVILEGES, GRANT OPTION FROM user [, user] ...

The REVOKE statement enables system administrators to revoke privileges
from MySQL accounts. To use REVOKE, you must have the GRANT OPTION
privilege, and you must have the privileges that you are revoking.

For details on the levels at which privileges exist, the allowable
priv_type values, and the syntax for specifying users and passwords,
see [grant]
