Foreign key update?

[Daevid Vincent]

I see there is a way to DELETE or NULL a cascade, but is there a way to
UPDATE?

Here's what I mean. Given these rough table schemas. I'd like to be able to
UPDATE the company_code in the company_table, and have it update the same
rep_company_code in the rep_table.  Ie. So a company has a certain code,
then we change it. I want all the reps to get their codes updated too
automagically... Is this possible now or in a future mySQL version?

CREATE TABLE company_table (
  company_id mediumint(8) unsigned NOT NULL auto_increment,
  company_name varchar(255) NOT NULL default '',
  company_code varchar(15) NOT NULL default '',
  company_referal_code varchar(15) NOT NULL default '',
  company_phone varchar(20) NOT NULL default '',
  company_fax varchar(20) NOT NULL default '',
  company_url varchar(50) NOT NULL default '',
  company_address1 varchar(70) NOT NULL default '',
  company_address2 varchar(70) NOT NULL default '',
  company_city varchar(50) NOT NULL default '',
  company_state varchar(50) NOT NULL default '',
  company_zip varchar(50) NOT NULL default '',
) TYPE=InnoDB;


CREATE TABLE rep_table (
  rep_id smallint(5) unsigned NOT NULL auto_increment,
  rep_login varchar(15) NOT NULL default '',
  rep_password varchar(15) NOT NULL default '',
  rep_company_code varchar(15) NOT NULL default '',
  rep_fname varchar(20) NOT NULL default '',
  rep_lname varchar(20) NOT NULL default '',
  rep_title varchar(50) NOT NULL default '',
) TYPE=InnoDB;