Disable foreign key checks in MySQL

Disabling foreign key checks in MySQL is usefull when you are dealing with tables that use foreign keys (InnoDB engine). You can not delete (drop) multiple tables, a parent table or a child table until you disable foreign key checks four your current database.

The sql command is:

SET FOREIGN_KEY_CHECKS = 0;

To re-enable the foreign key checks use:

SET FOREIGN_KEY_CHECKS = 1;