mysql按周分组

Question

我有一个包含以下字段的表:

• 编号
• 销售额
• the_date(unix 时间戳整数)
• payment_type(可以是现金，或账户)

我正在尝试创建一个查询，该查询将按一年中的每周对所有销售额进行分组，然后在我的页面上拆分每周的 amount_sales 总和。

例子:

week 1 = $26.00  
week 2 = $35.00  
week 3 = $49.00

等我正在使用此查询，但它不起作用:

  SELECT SUM(`amount_sale`) as total 
    FROM `sales` 
   WHERE `payment_type` = 'Account' 
GROUP BY WEEK(`the_date`)

Answer 1

如果将 the_date 存储为整数，首先需要使用 FROM_UNIXTIME 函数将其转换为日期时间:

 SELECT SUM(`amount_sale`) as total 
FROM `sales` 
WHERE `payment_type` = 'Account' 
GROUP BY WEEK(FROM_UNIXTIME(`the_date`))  

更新:
此外，您可能想要输出周数，

SELECT CONCAT('Week ', WEEK(FROM_UNIXTIME(`the_date`))) as week_number,
SUM(`amount_sale`) as total 
FROM `sales` 
WHERE `payment_type` = 'Account' 
GROUP BY WEEK(FROM_UNIXTIME(`the_date`))