如何在 SQL Server 中获取上个月的第一天和最后一天（带时间戳）

问题描述 投票：0回答：13

我找不到给出上个月第一天和最后一天以及时间戳的解决方案。

这是解决方案。

SELECT DATEADD(month, DATEDIFF(month, -1, getdate()) - 2, 0) as FirtDayPreviousMonthWithTimeStamp,
    DATEADD(ss, -1, DATEADD(month, DATEDIFF(month, 0, getdate()), 0)) as LastDayPreviousMonthWithTimeStamp

这将返回以下内容，如果 

currentdate = '2012-7-31'

结果：

2012-06-01 00:00:00.000    2012-06-30 23:59:59.000

这将返回以下内容，如果 

currentdate = '2012-1-1'

结果：

2011-12-01 00:00:00.000    2011-12-31 23:59:59.000

sql-server datetime
13个回答
294
投票
select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) --First day of previous month
select DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1) --Last Day of previous month
139
投票

本周第一天。

select CONVERT(varchar,dateadd(week,datediff(week,0,getdate()),0),106)

本周最后一天。

select CONVERT(varchar,dateadd(week,datediff(week,0,getdate()),6),106)

上周第一天。

select CONVERT(varchar,DATEADD(week,datediff(week,7,getdate()),0),106)

上周最后一天。

select CONVERT(varchar,dateadd(week,datediff(week,7,getdate()),6),106)

下周的第一天。

select CONVERT(varchar,dateadd(week,datediff(week,0,getdate()),7),106)

下周最后一天。

select CONVERT(varchar,dateadd(week,datediff(week,0,getdate()),13),106)

本月第一天。

select CONVERT(varchar,dateadd(d,-(day(getdate()-1)),getdate()),106)

本月最后一天。

select CONVERT(varchar,dateadd(d,-(day(dateadd(m,1,getdate()))),dateadd(m,1,getdate())),106)

在此示例中，仅适用日期为 31。其余天数不是。

上个月的第一天。

select CONVERT(varchar,dateadd(d,-(day(dateadd(m,-1,getdate()-2))),dateadd(m,-1,getdate()-1)),106)

上个月的最后一天。

select CONVERT(varchar,dateadd(d,-(day(getdate())),getdate()),106)

下个月的第一天。

select CONVERT(varchar,dateadd(d,-(day(dateadd(m,1,getdate()-1))),dateadd(m,1,getdate())),106)

下个月的最后一天。

select CONVERT(varchar,dateadd(d,-(day(dateadd(m,2,getdate()))),DATEADD(m,2,getdate())),106)

今年的第一天。

select CONVERT(varchar,dateadd(year,datediff(year,0,getdate()),0),106)

今年的最后一天。

select CONVERT(varchar,dateadd(ms,-2,dateadd(year,0,dateadd(year,datediff(year,0,getdate())+1,0))),106)

去年第一天。

select CONVERT(varchar,dateadd(year,datediff(year,0,getdate())-1,0),106)

去年的最后一天。

select CONVERT(varchar,dateadd(ms,-2,dateadd(year,0,dateadd(year,datediff(year,0,getdate()),0))),106)

明年的第一天。

select CONVERT(varchar,dateadd(YEAR,DATEDIFF(year,0,getdate())+1,0),106)

明年的最后一天。

select CONVERT(varchar,dateadd(ms,-2,dateadd(year,0,dateadd(year,datediff(year,0,getdate())+2,0))),106)
22
投票
SELECT CONVERT(DATE,DATEADD(MM, DATEDIFF(MM, 0, GETDATE())-1, 0)) AS FirstDayOfPrevMonth
SELECT CONVERT(DATE,DATEADD(MS, -3, DATEADD(MM, DATEDIFF(MM, 0, GETDATE()) , 0))) AS LastDayOfPrevMonth
19
投票

解决方案

您请求的日期格式称为 ODBC 格式（代码 120）。

要实际计算您请求的值，请在 SQL 中包含以下内容。

复制、粘贴...

DECLARE
    @FirstDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, -1, GETDATE() - 2)) ), DATEADD(m, -1, GETDATE() - 1)))
    , @LastDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE()) ), GETDATE()))

...并在您的代码中使用：

  • @上个月第一天
  • @上个月的最后一天

请注意，它必须早于任何引用参数的语句粘贴，但从那时起，您可以在代码中引用 @FirstDayOfLastMonth 和 @LastDayOfLastMonth。

示例

让我们看看一些正在运行的代码：

DECLARE
    @FirstDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, -1, GETDATE() - 2)) ), DATEADD(m, -1, GETDATE() - 1)))
    , @LastDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE()) ), GETDATE()))

SELECT
    'First day of last month' AS Title, CONVERT(VARCHAR, @FirstDayOfLastMonth , 120) AS [ODBC]
UNION 

SELECT 
    'Last day of last month' AS Title, CONVERT(VARCHAR, @LastDayOfLastMonth , 120) AS [ODBC]

运行上面的代码以产生以下输出：

注意： 请记住，今天对我来说的日期是 2016 年 9 月 12 日。

更多（为了完整起见）

常用日期参数

您还想要更多吗？

要设置更全面的方便的日期相关参数，请在 SQL 中包含以下内容：

DECLARE
    @FirstDayOfCurrentWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 0))
    , @LastDayOfCurrentWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 6))
    , @FirstDayOfLastWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 7, GETDATE()), 0))
    , @LastDayOfLastWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 7, GETDATE()), 6))
    , @FirstDayOfNextWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 7))
    , @LastDayOfNextWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 13))
    , @FirstDayOfCurrentMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE() - 1) ), GETDATE()))
    , @LastDayOfCurrentMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 1, GETDATE())) ), DATEADD(m, 1, GETDATE())))
    , @FirstDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, -1, GETDATE() - 2)) ), DATEADD(m, -1, GETDATE() - 1)))
    , @LastDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE()) ), GETDATE()))
    , @FirstDayOfNextMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 1, GETDATE() - 1)) ), DATEADD(m, 1, GETDATE())))
    , @LastDayOfNextMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 2, GETDATE())) ), DATEADD(m, 2, GETDATE())))
    , @FirstDayOfCurrentYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()), 0))
    , @LastDayOfCurrentYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 1, 0))))
    , @FirstDayOfLastYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) - 1, 0))
    , @LastDayOfLastYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()), 0))))
    , @FirstDayOfNextYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 1, 0))
    , @LastDayOfNextYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 2, 0))))

尽早包含它是最有意义的，最好是在过程或 SQL 查询的顶部。

声明后，可以根据需要在代码中的任何位置引用参数。

示例

让我们看看一些实际的代码：

DECLARE
    @FirstDayOfCurrentWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 0))
    , @LastDayOfCurrentWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 6))
    , @FirstDayOfLastWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 7, GETDATE()), 0))
    , @LastDayOfLastWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 7, GETDATE()), 6))
    , @FirstDayOfNextWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 7))
    , @LastDayOfNextWeek DATETIME = CONVERT(DATE, DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 13))
    , @FirstDayOfCurrentMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE() - 1) ), GETDATE()))
    , @LastDayOfCurrentMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 1, GETDATE())) ), DATEADD(m, 1, GETDATE())))
    , @FirstDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, -1, GETDATE() - 2)) ), DATEADD(m, -1, GETDATE() - 1)))
    , @LastDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(GETDATE()) ), GETDATE()))
    , @FirstDayOfNextMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 1, GETDATE() - 1)) ), DATEADD(m, 1, GETDATE())))
    , @LastDayOfNextMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, 2, GETDATE())) ), DATEADD(m, 2, GETDATE())))
    , @FirstDayOfCurrentYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()), 0))
    , @LastDayOfCurrentYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 1, 0))))
    , @FirstDayOfLastYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) - 1, 0))
    , @LastDayOfLastYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()), 0))))
    , @FirstDayOfNextYear DATETIME = CONVERT(DATE, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 1, 0))
    , @LastDayOfNextYear DATETIME = CONVERT(DATE, DATEADD(ms, -2, DATEADD(YEAR, 0, DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()) + 2, 0))))

SELECT  
    'a) FirstDayOfCurrentWeek.' AS [Title] ,
    @FirstDayOfCurrentWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 104) + ' ' + CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 105) + ' ' + CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 111) + ' ' + CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentWeek, 120) AS [ODBC]
UNION
SELECT  
    'b) LastDayOfCurrentWeek.' AS [Title] ,
    @LastDayOfCurrentWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfCurrentWeek, 120) AS [ODBC]
UNION
SELECT  
    'c) FirstDayOfLastWeek.' AS [Title] ,
    @FirstDayOfLastWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfLastWeek, 120) AS [ODBC]
UNION
SELECT  
    'd) LastDayOfLastWeek.' AS [Title] ,
    @LastDayOfLastWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfLastWeek, 120) AS [ODBC]
UNION
SELECT  
    'e) FirstDayOfNextWeek.' AS [Title] ,
    @FirstDayOfNextWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfNextWeek, 120) AS [ODBC]
UNION
SELECT  
    'f) LastDayOfNextWeek.' AS [Title] ,
    @LastDayOfNextWeek AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfNextWeek, 120) AS [ODBC]
UNION
SELECT  
    'g) FirstDayOfCurrentMonth.' AS [Title] ,
    @FirstDayOfCurrentMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentMonth, 120) AS [ODBC]
UNION
SELECT  
    'h) LastDayOfCurrentMonth.' AS [Title] ,
    @LastDayOfCurrentMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfCurrentMonth, 120) AS [ODBC]
UNION
SELECT  
    'i) FirstDayOfLastMonth.' AS [Title] ,
    @FirstDayOfLastMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfLastMonth, 120) AS [ODBC]
UNION
SELECT  
    'j) LastDayOfLastMonth.' AS [Title] ,
    @LastDayOfLastMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfLastMonth, 120) AS [ODBC]
UNION
SELECT  
    'k) FirstDayOfNextMonth.' AS [Title] ,
    @FirstDayOfNextMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfNextMonth, 120) AS [ODBC]
UNION
SELECT  
    'l) LastDayOfNextMonth.' AS [Title] ,
    @LastDayOfNextMonth AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfNextMonth, 120) AS [ODBC]
UNION
SELECT  
    'm) FirstDayOfCurrentYear.' AS [Title] ,
    @FirstDayOfCurrentYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfCurrentYear, 120) AS [ODBC]
UNION
SELECT  
    'n) LastDayOfCurrentYear.' AS [Title] ,
    @LastDayOfCurrentYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfCurrentYear, 120) AS [ODBC]
UNION
SELECT  
    'o) FirstDayOfLastYear.' AS [Title] ,
    @FirstDayOfLastYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfLastYear, 120) AS [ODBC]
UNION
SELECT  
    'p) LastDayOfLastYear.' AS [Title] ,
    @LastDayOfLastYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfLastYear, 120) AS [ODBC]
UNION
SELECT  
    'q) FirstDayOfNextYear.' AS [Title] ,
    @FirstDayOfNextYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @FirstDayOfNextYear, 120) AS [ODBC]
UNION
SELECT  
    'r) LastDayOfNextYear.' AS [Title] ,
    @LastDayOfNextYear AS [DATE (Server default)] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 127) AS [ISO8601] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 103) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [British&French] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 104) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [German] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 105) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Italian] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 111) + ' ' +  CONVERT(CHAR(5), @FirstDayOfCurrentWeek, 108) AS [Japan] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 100) AS [U.S.] ,
    CONVERT(VARCHAR, @LastDayOfNextYear, 120) AS [ODBC];

运行上面的代码以产生以下输出：

如果您所在的国家/地区缺失，那是因为我不知道该国家/地区的代码。如果您可以编辑此答案并为您所在的国家/地区添加新列，那将是非常有帮助和感激的。

提前致谢。

注意： 请记住，今天对我来说的日期是 2016 年 9 月 12 日。

参考文献

如需进一步阅读 ISO8601 国际日期标准，请点击以下链接：

如需进一步阅读 ODBC 国际日期标准，请点击此链接：

要查看我使用的日期格式列表，请点击此链接：

要进一步阅读 DATETIME 数据类型，请点击此链接：

14
投票

从 SQL2012 开始，引入了一个新函数，称为 

EOMONTH
。使用此功能可以轻松找到上个月的第一天和最后一天。

select DATEADD(DD,1,EOMONTH(Getdate(),-2)) firstdayoflastmonth, EOMONTH(Getdate(), -1) lastdayoflastmonth
6
投票
SELECT DATEADD(m,DATEDIFF(m,0,GETDATE())-1,0) AS PreviousMonthStart

SELECT DATEADD(ms,-2,DATEADD(month, DATEDIFF(month, 0, GETDATE()), 0)) AS PreviousMonthEnd
2
投票

要获取上个月的第一个日期：

select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) LastMonthFirstDate

要获取上个月的最后日期：

select DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1) LastMonthEndDate
1
投票

我在 SSRS 报告中使用了以下逻辑。

BUS_DATE = 17-09-2013

X=DATEADD(MONTH,-1,BUS_DATE) = 17-08-2013

Y=DAY(BUS_DATE)=17

first_date = DATEADD(DAY,-Y+1,X)=01-08-2013

last_date  = DATEADD(DAY,-Y,BUS_DATE)=31-08-2013
1
投票

您可以在 SQL Server 中获取上个月的第一天和最后一天（带时间戳） 通过执行

--select dateadd(dd,-datepart(dd,getdate())+1,dateadd(mm,-1,getdate())) --first day of previous month 
--select dateadd(dd,-datepart(dd,getdate()),getdate()) -- last day of previous month**
1
投票

取某个月的 31 号作为基准日期，例如“20011231”。然后使用
以下过程（我在下面给出了 3 个相同的示例，只有 @dt 值不同）。

declare @dt datetime;

set @dt = '20140312'

SELECT DATEADD(month, DATEDIFF(month, '20011231', @dt), '20011231');



set @dt = '20140208'

SELECT DATEADD(month, DATEDIFF(month, '20011231', @dt), '20011231');



set @dt = '20140405'

SELECT DATEADD(month, DATEDIFF(month, '20011231', @dt), '20011231');
1
投票

这是一种相当直接且动态的方式。对于上个月的最后一天，从今天的日期中减去当前的数字日期。对于上个月的第一天，使用相同的代码，只需重复从之前的结果中减去数字日期并加 1。

declare @PriorEOM as datetime
declare @PriorFOM as datetime

Set @PriorEOM = dateadd(day,-day(getdate()),getdate())

Set @PriorFOM = dateadd(day,-day(@PriorEOM) + 1,@PriorEOM)

Print @PriorEOM
Print @PriorFOM
1
投票

我还没有看到这个解决方案；这是我对其更简单的可读性的偏好：

select dateadd(month,-1,format(getutcdate(),'yyyy-MM-01'))
0
投票

结合 Aaron Bertrand 对这个问题的评论和 diwaker 使用 EOMonth 的建议。

如果您想获取整个上个月，通常最好 >= [上个月的第一天] 和 < [first day of this month], which will include all dates & times of the previous month. This would be:

select DATEADD(DD,1,EOMONTH(Getdate(),-2)) firstdayoflastmonth
select DATEADD(DD, 1,EOMONTH(Getdate(), -1)) firstdayofthismonth
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