时间维度表,不管是在建立数据方还是在其他方面都有很多的用途,可以自己生成一张时间维表。我的同事老J做了一段存储过程可以实现时间维表的建立,该方法简便灵活,可以直接使用。
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description:<Description,,>
-- =============================================
ALTER PROCEDURE [dbo].[Create_time_dimension]
-- Add the parameters for the stored procedure here
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
begin try
drop table [time_dimension]
end try
begin catch
end catch
CREATE TABLE [dbo].[time_dimension] (
[time_id] [int] IDENTITY (1, 1) NOT NULL ,
[the_date] [datetime] NULL ,
[the_day] [nvarchar] (15) NULL ,
[the_month] [nvarchar] (15) NULL ,
[the_year] [smallint] NULL ,
[day_of_month] [smallint] NULL ,
[week_of_year] [smallint] NULL ,
[month_of_year] [smallint] NULL ,
[quarter] [nvarchar] (2) NULL ,
[fiscal_period] [nvarchar] (20) NULL
) ON [PRIMARY]
DECLARE @WeekString varchar(12),
@dDate SMALLDATETIME,
@sMonth varchar(20),
@iYear smallint,
@iDayOfMonth smallint,
@iWeekOfYear smallint,
@iMonthOfYear smallint,
@sQuarter varchar(2),
@sSQL varchar(100),
@adddays int
SELECT @adddays = 1 --日期增量(可以自由设定)
SELECT @dDate = '01/01/2002' --开始日期
WHILE @dDate < '12/31/2010' --结束日期
BEGIN
SELECT @WeekString = DATENAME (dw, @dDate)
SELECT @sMonth=DATENAME(mm,@dDate)
SELECT @iYear= DATENAME (yy, @dDate)
SELECT @iDayOfMonth=DATENAME (dd, @dDate)
SELECT @iWeekOfYear= DATENAME (week, @dDate)
SELECT @iMonthOfYear=DATEPART(month, @dDate)
SELECT @sQuarter = 'Q' + CAST(DATENAME (quarter, @dDate)as varchar(1))
INSERT INTO time_dimension(the_date, the_day, the_month, the_year,
day_of_month,
week_of_year, month_of_year, quarter) VALUES
(@dDate, @WeekString, @sMonth, @iYear, @iDayOfMonth, @iWeekOfYear,
@iMonthOfYear, @sQuarter)
SELECT @dDate = @dDate + @adddays
END
END
GO
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER OFF
GO
建立后的时间维度表如下所示。
1 2002-01-01 00:00:00.000星期二 01 2002 1 1 1 Q1 NULL
2 2002-01-02 00:00:00.000星期三 01 2002 2 1 1 Q1 NULL
3 2002-01-03 00:00:00.000星期四 01 2002 3 1 1 Q1 NULL
4 2002-01-04 00:00:00.000星期五 01 2002 4 1 1 Q1 NULL
5 2002-01-05 00:00:00.000星期六 01 2002 5 1 1 Q1 NULL
6 2002-01-06 00:00:00.000星期日 01 2002 6 2 1 Q1 NULL
7 2002-01-07 00:00:00.000星期一 01 2002 7 2 1 Q1 NULL
8 2002-01-08 00:00:00.000星期二 01 2002 8 2 1 Q1 NULL
9 2002-01-09 00:00:00.000星期三 01 2002 9 2 1 Q1 NULL
10 2002-01-10 00:00:00.000星期四 01 2002 10 2 1 Q1 NULL