MySQL查詢計算上週

Question

我想計算我在前一週的總訂單金額。

我得到了從當前日期獲取過去7天數據的查詢。

SELECT SUM(goods_total) AS Total_Amount FROM orders 
WHERE order_placed_date >= date_sub(current_date, INTERVAL 7 day); 

現在我怎樣才能得到上週的數據只有本週不包括在內。

例如，本週我賺了15,000美元，上週我賺了14,000美元。

我通過運行上述查詢得到15,000美元。

但我不知道如何計算上週。

Answer 1

根據您在Alex的回答給了更多的信息，我想下面的馬y工作：

SELECT SUM(goods_total) AS Total_Amount, "Previous week" AS Week FROM orders 
WHERE order_placed_date >= date_sub(current_date, INTERVAL 14 day) 
AND order_placed_date < date_sub(current_date, INTERVAL 7 day) 
UNION 
SELECT SUM(goods_total) AS Total_Amount, "This week" AS Week FROM orders 
WHERE order_placed_date >= date_sub(current_date, INTERVAL 7 day) 

這應該返回兩行和兩列，每個星期的總金額。

Answer 2

要做到這一點最簡單的方法是使用mysql Date and Time Functions

WEEKOFYEAR（）

Answer 3

您可以使用DATE_SUB()。

Answer 4

嘗試：

SELECT SUM(goods_total) AS Total_Amount FROM orders 
WHERE order_placed_date >= date_sub(current_date, INTERVAL 14 day) 
AND order_placed_date < date_sub(current_date, INTERVAL 7 day); 

Answer 5

如果你想 「滾動周」（滑動7天之久的窗口），而不是開始於週日（或其他特定平日）周，

SELECT SUM(goods_total) AS Total_Amount FROM orders 
WHERE order_placed_date BETWEEN 
date_sub(current_date, INTERVAL 14 day) AND 
date_sub(current_date, INTERVAL 8 day); 

Answer 6

什麼關於以下查詢：

SELECT count(order_placed_date) 
FROM  orders 
WHERE YEARWEEK(order_placed_date) = YEARWEEK(CURRENT_DATE - INTERVAL 7 DAY) 

Answer 7

 
mysql> SELECT DATE_SUB(current_date, INTERVAL WEEKDAY(current_date)+8 DAY) last_sunday 
, YEARWEEK(DATE_SUB(current_date, INTERVAL WEEKDAY(current_date)+8 DAY)) last_week_of_year 
, DATE_SUB(current_date, INTERVAL WEEKDAY(current_date)+1 DAY) this_sunday 
, YEARWEEK(DATE_SUB(current_date, INTERVAL WEEKDAY(current_date)+1 DAY)) this_week_of_year; 

*************************** 1. row *************************** 
     last_sunday: 2012-01-29 
last_week_of_year: 201205 
     this_sunday: 2012-02-05 
this_week_of_year: 201206 

Answer 8

前8〜14天的記錄不包括過去7天的記錄，查詢：

SELECT * FROM `Table_Name` 
WHERE `Field_Name` >= DATE_SUB(NOW(),INTERVAL 14 DAY) 
AND `Field_Name` < DATE_SUB(NOW(),INTERVAL 7 DAY) 

• Field_Name：必須在YYYY-mm-dd（2012年9月20日）格式的有效日期。
• Table_Name：你需要從哪裏獲取記錄。