Excel中我们可以使用这个公式统计出各个价格所属的价位段，然后再通过透视表得出数据结果：

=LOOKUP(H2,{0,49.99,99.99,149.99,199.99,249.99;”050″,”100″,”150″,”200″,”250″,”250+”})

MySQL中则可使用以下命令，一步到位：

SELECT price_range, count(*) AS number
FROM
(select case when Price >= 0 and Price <= 49.99 then '050'
             when Price >= 50 and Price <= 99.99 then '100'
             when Price >= 100 and Price <= 149.99 then '150'
             when Price >= 150 and Price <= 199.99 then '200'
             when Price >= 200 and Price <= 249.99 then '250'
             else '250+'
         end as price_range
FROM products
WHERE 1
) AS  price_summaries
GROUP BY price_range
ORDER BY price_range;

为了方便排序，以上我们简化了数字区间的命名，相当于是[0,50)、[50,100)、[100,150)、[150,200)、[200,250)、[250,+∞)