生成日期列表(工作日,休息日,全部日期)
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_getdate]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_getdate]
GO
/*--生成日期列表
生成指定年份的工作日/休息日列表
--邹建 2003.12(引用请保留此信息)--*/
/*--调用示例
--查询 2003 年的工作日列表
SELECT * FROM dbo.f_getdate(2003,0)
--查询 2003 年的休息日列表
SELECT * FROM dbo.f_getdate(2003,1)
--查询 2003 年全部日期列表
SELECT * FROM dbo.f_getdate(2003,NULL)
--*/
CREATE FUNCTION dbo.f_getdate(
@year int, --要查询的年份
@bz bit --@bz=0 查询工作日,@bz=1 查询休息日,@bz IS NULL 查询全部日期
)RETURNS @re TABLE(id int identity(1,1),Date datetime,Weekday nvarchar(3))
AS
BEGIN
DECLARE @tb TABLE(ID int IDENTITY(0,1),Date datetime)
INSERT INTO @tb(Date) SELECT TOP 366 DATEADD(Year,@YEAR-1900,'1900-1-1')
FROM sysobjects a ,sysobjects b
UPDATE @tb SET Date=DATEADD(DAY,id,Date)
DELETE FROM @tb WHERE Date>DATEADD(Year,@YEAR-1900,'1900-12-31')
IF @bz=0
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM @tb
WHERE (DATEPART(Weekday,Date)+@@DATEFIRST-1)%7 BETWEEN 1 AND 5
ELSE IF @bz=1
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM @tb
WHERE (DATEPART(Weekday,Date)+@@DATEFIRST-1)%7 IN (0,6)
ELSE
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM @tb
RETURN
END
GO
/*====================================================================*/
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_getdate]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_getdate]
GO
/*--生成列表
生成指定日期段的日期列表
--邹建 2005.03(引用请保留此信息)--*/
/*--调用示例
--查询工作日
SELECT * FROM dbo.f_getdate('2005-1-3','2005-4-5',0)
--查询休息日
SELECT * FROM dbo.f_getdate('2005-1-3','2005-4-5',1)
--查询全部日期
SELECT * FROM dbo.f_getdate('2005-1-3','2005-4-5',NULL)
--*/
CREATE FUNCTION dbo.f_getdate(
@begin_date Datetime, --要查询的开始日期
@end_date Datetime, --要查询的结束日期
@bz bit --@bz=0 查询工作日,@bz=1 查询休息日,@bz IS NULL 查询全部日期
)RETURNS @re TABLE(id int identity(1,1),Date datetime,Weekday nvarchar(3))
AS
BEGIN
DECLARE @tb TABLE(ID int IDENTITY(0,1),a bit)
INSERT INTO @tb(a) SELECT TOP 366 0
FROM sysobjects a ,sysobjects b
IF @bz=0
WHILE @begin_date<=@end_date
BEGIN
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM(
SELECT Date=DATEADD(Day,ID,@begin_date)
FROM @tb
)a WHERE Date<=@end_date
AND (DATEPART(Weekday,Date)+@@DATEFIRST-1)%7 BETWEEN 1 AND 5
SET @begin_date=DATEADD(Day,366,@begin_date)
END
ELSE IF @bz=1
WHILE @begin_date<=@end_date
BEGIN
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM(
SELECT Date=DATEADD(Day,ID,@begin_date)
FROM @tb
)a WHERE Date<=@end_date
AND (DATEPART(Weekday,Date)+@@DATEFIRST-1)%7 in(0,6)
SET @begin_date=DATEADD(Day,366,@begin_date)
END
ELSE
WHILE @begin_date<=@end_date
BEGIN
INSERT INTO @re(Date,Weekday)
SELECT Date,DATENAME(Weekday,Date)
FROM(
SELECT Date=DATEADD(Day,ID,@begin_date)
FROM @tb
)a WHERE Date<=@end_date
SET @begin_date=DATEADD(Day,366,@begin_date)
END
RETURN
END
GO
---给一个日期,生成本周的日期列表:
declare @date datetime
set @date='20090423'
select dateadd(dd,a.number,@date+2-datepart(dw,@date))
from master..spt_values a
where type='p'
and number<=6
declare @d datetime
set @d = getdate()
select dateadd(d,n,@d) as t
from (select -1 as n union select -2 union select -3 union select -4 union select -5 union select -6 union
select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 0) t
where datepart(wk,@d)=datepart(wk,dateadd(d,n,@d))