public function getMigrations(Updater $updater)
{
return array($this->migration->db->changeColumnType('access', 'login', 'VARCHAR( 100 ) NOT NULL'), $this->migration->db->changeColumnType('user', 'login', 'VARCHAR( 100 ) NOT NULL'), $this->migration->db->changeColumnType('user_dashboard', 'login', 'VARCHAR( 100 ) NOT NULL'), $this->migration->db->changeColumnType('user_language', 'login', 'VARCHAR( 100 ) NOT NULL'));
}