我想要獲得星期日WeekNo？

我正在使用SQL Server 2008 R2。我需要得到星期日weekno，並且我已經有了查詢，但它顯示了錯誤的數據。我能做什麼？我想要獲得星期日WeekNo？

它顯示了2而不是1。例如，06-JAN-2013（WeekNo - 1）

我的查詢是

SELECT DATEPART (week, '01-13-2013 23:59:59.000') As WeekNo1 , 
    DATEPART (week, '01-06-2013 23:59:59.000') As WeekNo2 , 
    DATEPART (week, '12-30-2012 23:59:59.000') As WeekNo3 , 
    DATEPART (week, '12-23-2012 23:59:59.000') As WeekNo4 , 
    DATEPART (week, '12-16-2012 23:59:59.000') As WeekNo5 , 
    DATEPART (week, '12-09-2012 23:59:59.000') As WeekNo6

來源

2013-01-24 Adalarasan_Serangulam

查詢：

SQLFIDDLEExample

SET DATEFIRST 1 
SELECT DATEPART (week, '01-13-2013 23:59:59.000') As WeekNo1 , 
     DATEPART (week, '01-06-2013 23:59:59.000') As WeekNo2 , 
     DATEPART (week, '12-30-2012 23:59:59.000') As WeekNo3 , 
     DATEPART (week, '12-23-2012 23:59:59.000') As WeekNo4 , 
     DATEPART (week, '12-16-2012 23:59:59.000') As WeekNo5 , 
     DATEPART (week, '12-09-2012 23:59:59.000') As WeekNo6

結果：

| WEEKNO1 | WEEKNO2 | WEEKNO3 | WEEKNO4 | WEEKNO5 | WEEKNO6 | 
------------------------------------------------------------- 
|  2 |  1 |  53 |  52 |  51 |  50 |

來源

2013-01-24 12:04:49 Justin

初始/原始'DATEFIRST'設置應該在'SELECT ...'後恢復。 –

感謝您的回覆@justin，我接受你的回答.. –

您需要將DATEFIRST屬性設置爲星期的開始日期。這指定了一週中的第一天。

要確定您的服務器的一週的第一天是什麼，你將使用：

SELECT @@DATEFIRST

然後，如果你需要修改的值，你可以使用：

SET DATEFIRST 1; 

SELECT DATEPART (week, '01-13-2013 23:59:59.000') As WeekNo1 , 
    DATEPART (week, '01-06-2013 23:59:59.000') As WeekNo2 , 
    DATEPART (week, '12-30-2012 23:59:59.000') As WeekNo3 , 
    DATEPART (week, '12-23-2012 23:59:59.000') As WeekNo4 , 
    DATEPART (week, '12-16-2012 23:59:59.000') As WeekNo5 , 
    DATEPART (week, '12-09-2012 23:59:59.000') As WeekNo6

見SQL Fiddle with Demo。

來源

2013-01-24 12:05:37 Taryn

我想要獲得星期日WeekNo？

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