title: MySQL cascade deleting for one query
body: <p>I have a mysql database with a lot of tables. Each table has InnoDB format.
  I have a table called "companies". Each company has an account, account has transactions and there are lots of other related tables.</p>
  
  <p>I want to delete some companies and all data related to them.
  Each foreign key has "NO ACTION" on delete event. </p>
  
  <p>How could I temporary delete all relations without manually setting ON DELETE CASCADE for each foreign key?</p>