一、给定一个日期值，求出此日期所在星期的星期一和星期天的日期数据

例如给定一个日期 2010-09-01，求出它所在星期的星期一是2010-08-30，星期天是2010-09-05

Function创建如下:

复制代码 代码如下:

USE [MSSQL]

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE FUNCTION [dbo].[My_OneDay_GetWeekFirstAndEndDay](@tmpDate DATETIME)

RETURNS @tmpTable TABLE(FirstDay DATETIME , EndDay DATETIME)

AS

BEGIN

INSERT INTO @tmpTable

SELECT a.FirstDay,b.EndDay FROM (

SELECT 1 AS ID,DATEADD(wk, DATEDIFF(wk,0,@tmpDate), 0) AS FirstDAy

) a

LEFT JOIN (

SELECT 1 AS ID,DATEADD(wk, DATEDIFF(wk,0,@tmpDate), 6) AS EndDay

) b

ON a.ID = b.ID

RETURN

End

Function测试:

复制代码 代码如下:

SELECT * from My_OneDay_GetWeekFirstAndEndDay('2010-09-01')

二、以上面单个日期搜索为基础，由用户输入两个参数，一个是开始日期，一个结束日期，根据这两个参数，求出在此时期段内的所有星期的星期一和星期天的日期表并排序。

例如开始日期是2011-09-01,结束日期是2011-10-06，我们就可以得到此星期表如下:

WeekOrder FirstDay EndDay

1 2011-08-29 00:00:00.000 2011-09-04 00:00:00.000

2 2011-09-05 00:00:00.000 2011-09-11 00:00:00.000

3 2011-09-12 00:00:00.000 2011-09-18 00:00:00.000

4 2011-09-19 00:00:00.000 2011-09-25 00:00:00.000

5 2011-09-26 00:00:00.000 2011-10-02 00:00:00.000

6 2011-10-03 00:00:00.000 2011-10-09 00:00:00.000

Function创建如下:

复制代码 代码如下:

USE [MSSQL]

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE FUNCTION [dbo].[MY_Range_GetWeekFirstAndEndDays](@tmpDateSTART DATETIME,@tmpDateEND DATETIME)

RETURNS @tmpTable TABLE(WeekOrder INT,FirstDay DATETIME , EndDay DATETIME)

AS

BEGIN

DECLARE @tmpDate DATETIME

DECLARE @index INT

SET @tmpDate=@tmpDateSTART

SET @index=1

WHILE @tmpDate <=@tmpDateEND

BEGIN

INSERT INTO @tmpTable

SELECT @index,a.FirstDay,b.EndDay FROM (

SELECT 1 AS ID,DATEADD(wk, DATEDIFF(wk,0,@tmpDate), 0) AS FirstDAy) a

LEFT JOIN (

SELECT 1 AS ID,DATEADD(wk, DATEDIFF(wk,0,@tmpDate), 6) AS EndDay) b

ON a.ID = b.ID

SET @tmpDate=DATEADD(DAY,7,@tmpDate)

SET @index=@index+1

END

RETURN

End

Function测试:

复制代码 代码如下:

SELECT * from My_Range_GetWeekFirstAndEndDays('2011-09-01','2011-10-06')