查找周开始和周结束日期

Question

我有周数和年份，我需要在我的 ssrs 列中显示 "total for mm/dd/yy to mm/dd/yy in a row of my ssrs report. My week starts with Monday. For example if my week number is '2' and year is '2010' then I have to display "01/04/2010 到 01/10/2010 的总数。怎么做？

Answer 1

希望对您有所帮助：

declare @year char(4) = '2014'
declare @week int = 2
select dateadd(week,@week,convert(date,@year+'-01-01',121))

从此list

更改适合您的日期格式

Answer 2

SQL服务器在此之前有一个DATEPART function which calculates the ordinal week number of a year. However, you have to call DATEFIRST来定义一周中的哪一天代表一周的开始。在您的情况下，您已经声明一周的开始是星期一（即 1）。

SET DATEFIRST 1;

SELECT SUM([your data column])
FROM [your table]
WHERE DATEPART(WEEKNUM, [your date column])=[your week parameter]
AND DATEPART(YEAR, [your date column])=[your year parameter]

Answer 3

试试这个

declare @year char(4) = '2010'
declare @week int = 2
declare @fromdate datetime
declare @todate datetime
set @fromdate = DATEADD(wk, DATEDIFF(wk, 6, '1/1/' + @year) + (@week-1), 7);
set @todate = DATEADD(wk, DATEDIFF(wk, 5, '1/1/' + @year) + (@week-1), 6) ;
;WITH dates AS 
(
    SELECT CONVERT(datetime,@fromDate) as Date
    UNION ALL
    SELECT DATEADD(d,1,[Date])
    FROM dates 
    WHERE DATE < @toDate
)
select * from dates

Answer 4

你的描述不是美国标准也不是isoweek。似乎是这些的混合体。我从来没有听说过这是一个标准。快等周了。这就是这个答案的基础。

计算iso年有点棘手，你可以阅读here：

这是您需要的语法：

DECLARE @year int = 2010
DECLARE @week int = 2
;WITH CTE AS
(
  SELECT 
      dateadd(wk,  datediff(wk, - @week * 7, 
        cast(cast(@year as char(4)) as datetime) - 5), 0) startofweek
)
SELECT 
  replace('total for ' + convert(char(10), startofweek, 110)
  + ' to ' + convert(char(10), dateadd(day, 6, startofweek) , 110), '-', '/')
FROM CTE

结果：

total for 01/11/2010 to 01/17/2010

2010 年第 2 周是 2010-01-11

Answer 5

尝试设置 DATEFIRST (https://msdn.microsoft.com/en-ie/library/ms181598.aspx)

SET DATEFIRST 7

declare @wk int  
declare @yr int
declare @EndOfWeek as datetime

set @wk = 2
set @yr = 2010


SET @EndOfWeek = dateadd (week, @wk, dateadd (year, @yr-1900, 0)) + 1 - datepart(dw, dateadd (week, @wk, dateadd (year, @yr-1900, 0)) )

SELECT 
    replace('total for ' + convert(char(10), dateadd(day, -6, @EndOfWeek) , 110)
  + ' to ' + convert(char(10), @EndOfWeek, 110), '-', '/')

结果：

total for 01/04/2010 to 01/10/2010

查找周开始和周结束日期

Finding week start and week end date

sql

sql-server

sql-server-2008

reporting-services

ssrs-2008-r2