$this->addSql('ALTER TABLE '.$this->getTable('oauth2_clients').' ADD user_id INT(11) DEFAULT NULL');
$this->addSql('ALTER TABLE '.$this->getTable('oauth2_clients').' ADD CONSTRAINT FK_clients_user_clients FOREIGN KEY (user_id) REFERENCES '.$this->getTable('user').' (id) ON DELETE CASCADE');
}
$this->addSql('ALTER TABLE '.$this->getTable('oauth2_clients').' ADD user_id INT(11) DEFAULT NULL');
$this->addSql('ALTER TABLE '.$this->getTable('oauth2_clients').' ADD CONSTRAINT FK_clients_user_clients FOREIGN KEY (user_id) REFERENCES '.$this->getTable('user').' (id) ON DELETE CASCADE');
}