$this->assertEquals(
            'SELECT * FROM `' . DB_PREFIX . 'user` AS `u` , `' . DB_PREFIX . 'articles` AS `a` , `' . DB_PREFIX . 'products` AS `p` , `' . DB_PREFIX . 'orders` AS `o` , `' . DB_PREFIX . 'rating` AS `r`',
            self::qb()->select()->from('user as u, articles as a', ['products' => 'p', 'orders' => 'o'], 'rating as r')->sql()
        );