MySQL - ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails

MySQL - ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails

При удалении базы mymail получаем ошибку вида:

MariaDB [(none)]> drop database mymail;
ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails

Решение этой проблемы:

MariaDB [(none)]> SET FOREIGN_KEY_CHECKS=0; drop database mymail; SET FOREIGN_KEY_CHECKS=1;