MySQL組按特定時間間隔

Question

無論如何有沒有按特定時間間隔分組的示例，例如，我有這種類型的表：

invoice_id  due_date    invoice_balance
4           2019-02-04  192
5           2019-03-18  0   
6           2019-03-18  3
7           2019-04-24  30392   
8           2019-04-25  47.5    

現在我有很多這樣的記錄，我希望它們按特定的日期間隔（今天，今天+7天，7天至30天，超過30天）進行分組，總計總計：

預期成績 ：

total  date between
2000   today
2000   today+7 day
2000   7dayto30day
2000   morethan30days

所以我嘗試了這樣的事情：

SELECT SUM(invoice_balance) as sum,invoice_id, due_date 
FROM `my_invoice_master` 
GROUP BY if(due_date between "2019-02-04" and "2019-04-26",0,1),if(due_date between "2019-07-05" and "2019-07-09",0,1) 
ORDER BY u.meta_value asc LIMIT 0 , 10

但這是行不通的，是否有按指定的日期間隔返回結果？

Answer 1

您可以使用條件聚合來做到這一點：

SELECT 
  SUM(case 
        when due_date = current_date then invoice_balance 
        else 0 
      end) as `today`,
  SUM(case 
        when due_date between current_date + interval 1 day and current_date + interval 7 day then invoice_balance 
        else 0 
      end) as `today+7 day`,
  SUM(case 
        when due_date between current_date + interval 8 day and current_date + interval 30 day then invoice_balance 
        else 0 
      end) as `7dayto30day`,  
  SUM(case 
        when due_date > current_date + interval 30 day then invoice_balance 
        else 0 
      end) as `morethan30days`
FROM `my_invoice_master` 

Answer 2

您可以使用功能IF：

select invoice_id, invoice_balance, 
  IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=7
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))>0, 'today+7', 'today')
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=30, '7dayto30day', 'morethan30days')
  ) as due_period
from my_invoice_master

此查詢按期間顯示所有記錄。 如果Due_date小於今天，那么它會“今天”到您。

---

如果您需要按invoice_id合計invoice_balance，請使用以下命令：

select invoice_id, sum(invoice_balance), 
  @due_period:= IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=7
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))>0, 'today+7', 'today')
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=30, '7dayto30day', 'morethan30days')
  ) as due_period
from my_invoice_master
group by invoice_id, @due_period

---

如果您需要按期總計invoice_balance，請使用以下命令：

select sum(invoice_balance), 
  @due_period:= IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=7
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))>0, 'today+7', 'today')
    , IF(DATEDIFF(DATE(due_date), DATE(NOW()))<=30, '7dayto30day', 'morethan30days')
  ) as due_period
from my_invoice_master
group by @due_period