在 SQL Server 2008 中将每日数据转换为每周格式

Question

Conversiondate         Activity
2013-09-30 00:00:00    Renaissance_Homepage_022013
2013-09-12 00:00:00    RFP - Total
2013-09-23 00:00:00    Reservations Rate List Menu
2013-09-08 00:00:00    SHS 2.0 Home
2013-09-17 00:00:00    MR Promo Registration Confirmation
2013-09-13 00:00:00    Renaissance_ReservationOverlay_022013
2013-09-02 00:00:00    Reservations Rate List Menu
2013-09-13 00:00:00    Renaissance_HotelPage_022013
2013-09-08 00:00:00    Reservations Rate List Menu

我的上表包含日期和活动。现在我想编写脚本，每周我可以在其中找到新的活动。例如：我本周有 10 项活动，下周将增加另外 2 项活动。因此，这 2 个将是新的，并希望编写脚本以每周为基础以以下格式查找新活动；

本周将从星期日开始。

StartDateWEEk     ENDDATEWEEK             Activity          Week
----------------------------------------------------------------    
2013-09-01         2013-09-07         Booking Confo          36
2013-09-01         2013-09-07         Mobile                 36
2013-09-08         2013-09-14         Mobileconfo            37
2013-09-08         2013-09-14         Mobile                 37
2013-09-08         2013-09-14         Reservation            37

我想创建这种格式，您可以看到在第 37 周有一个新的活动来调用 reservation。我想设置自动化流程来每周捕捉这些新活动。

Answer 1

我只是猜测您是如何在您的 Desired OUPUT 中获得活动列的，无论如何这是我会做的......

测试数据

DECLARE @TABLE TABLE( Conversiondate DATETIME,Activity VARCHAR(400))
INSERT INTO @TABLE VALUES
('2013-09-30 00:00:00','Renaissance_Homepage_022013'),
('2013-09-12 00:00:00','RFP - Total'),
('2013-09-23 00:00:00','Reservations Rate List Menu'),
('2013-09-08 00:00:00','SHS 2.0 Home'),
('2013-09-17 00:00:00','MR Promo Registration Confirmation'),
('2013-09-13 00:00:00','Renaissance_ReservationOverlay_022013'),
('2013-09-02 00:00:00','Reservations Rate List Menu'),
('2013-09-13 00:00:00','Renaissance_HotelPage_022013'),
('2013-09-08 00:00:00','Reservations Rate List Menu')

查询

SELECT   CAST(DATEADD(dd, -(DATEPART(dw, Conversiondate)-1)
                         , Conversiondate) AS DATE) [WeekStart]
        ,CAST(DATEADD(dd, 7-(DATEPART(dw, Conversiondate))
                          , Conversiondate) AS DATE) [WeekEnd]
        ,  Activity
        ,DATEPART(WEEK, Conversiondate) [Week_Number]
FROM @TABLE

结果集

╔════════════╦════════════╦═══════════════════════════════════════╦═════════════╗
║ WeekStart  ║  WeekEnd   ║               Activity                ║ Week_Number ║
╠════════════╬════════════╬═══════════════════════════════════════╬═════════════╣
║ 2013-09-29 ║ 2013-10-05 ║ Renaissance_Homepage_022013           ║          40 ║
║ 2013-09-08 ║ 2013-09-14 ║ RFP - Total                           ║          37 ║
║ 2013-09-22 ║ 2013-09-28 ║ Reservations Rate List Menu           ║          39 ║
║ 2013-09-08 ║ 2013-09-14 ║ SHS 2.0 Home                          ║          37 ║
║ 2013-09-15 ║ 2013-09-21 ║ MR Promo Registration Confirmation    ║          38 ║
║ 2013-09-08 ║ 2013-09-14 ║ Renaissance_ReservationOverlay_022013 ║          37 ║
║ 2013-09-01 ║ 2013-09-07 ║ Reservations Rate List Menu           ║          36 ║
║ 2013-09-08 ║ 2013-09-14 ║ Renaissance_HotelPage_022013          ║          37 ║
║ 2013-09-08 ║ 2013-09-14 ║ Reservations Rate List Menu           ║          37 ║
╚════════════╩════════════╩═══════════════════════════════════════╩═════════════╝