public IActionResult TestCase6(int lower, int upper)
        {
            MySqlHandler sqlhander = new MySqlHandler();
            var          products  = sqlhander.GetProductJoinProductTypeAndCompanyById(lower, upper);

            return(Ok(products));
        }
        public List <Product> TestCase18MySql(int lower, int upper)
        {
            MySqlHandler sqlhander = new MySqlHandler();
            var          products  = sqlhander.GetProductJoinProductTypeAndCompanyById(lower, upper);

            return(products);
        }
        public IActionResult TestCase3(int id)
        {
            MySqlHandler sqlhander = new MySqlHandler();
            Product      product   = sqlhander.GetProductJoinProductTypeAndCompanyById(id);

            return(Ok(product));
        }
        public Product TestCase15MySql(int id)
        {
            MySqlHandler sqlhander = new MySqlHandler();
            var          product   = sqlhander.GetProductJoinProductTypeAndCompanyById(id);

            return(product);
        }