DROP USERuser[,user] ...
The DROP USER statement removes
one or more MySQL accounts and their privileges. It removes
privilege rows for the account from all grant tables. To use
this statement, you must have the global
CREATE USER privilege or the
DELETE privilege for the
mysql database. Each account name uses the
format described in Section 5.4.3, “Specifying Account Names”. For
example:
DROP USER 'jeffrey'@'localhost';
If you specify only the user name part of the account name, a
host name part of '%' is used.
DROP USER does not
automatically close any open user sessions. Rather, in the
event that a user with an open session is dropped, the
statement does not take effect until that user's session is
closed. Once the session is closed, the user is dropped, and
that user's next attempt to log in will fail. This
is by design.
DROP USER does not automatically
drop or invalidate databases or objects within them that the old
user created. This includes stored programs or views for which
the DEFINER attribute names the dropped user.
Attempts to access such objects may produce an error if they
execute in definer security context. (For information about
security context, see
Section 19.6, “Access Control for Stored Programs and Views”.)