SQL查询以获取每个产品类别中每月每天销售的产品数量

Question

问题在于：我有一张包含销售数字（价格，日期，商店）的表格。商店并不重要，但我需要一个查询生成结果，如本例

Date          Price
12/01/2012    100   
12/01/2012    150
12/01/2012    270
13/01/2012    50
13/01/2012    150
13/01/2012    230
14/01/2012    330

结果表应如下所示

Date             0-100 100-200 200-300  300-400
12/01/2012       0       1       1        0
13/01/2013       1       1       1        1

所以基本上我需要一个查询来自动识别表格中的所有独特日期，然后计算每天每个价格范围内的销售额

如果这是平庸的，我道歉，我正在学习SQL。顺便说一句，这是SQLite3 我猜你的答案可以用于任何SQL falvour但请记住我将不得不使用sqlite

提前致谢 ç

Answer 1

SELECT Date,
       SUM(Price BETWEEN   0 AND  99) AS '0-100',
       SUM(Price BETWEEN 100 AND 199) AS '100-200',
       SUM(Price BETWEEN 200 AND 299) AS '200-300',
       SUM(Price BETWEEN 300 AND 399) AS '300-400'
FROM MyTable
GROUP BY Date