The CREATE USER statement creates new MySQL accounts.  To use it, you
must have the global CREATE USER privilege or INSERT
privilege on mysql database.
For each account, CREATE USER creates a new record in the
mysql.user table that has no privileges. An error occurs if the
account already exists.  The account can be given a password with the
optional IDENTIFIED BY clause.  The user value and the password
are given the same way as for the GRANT statement.
