分享OLAP的时间维度设计语句

时间维度在OLAP中是很常用，我们一般分为日期维度和时刻维度组成。我整理了如何生成他们的语句如下

1）日期维度[Dim_Date]

IF EXISTS(select * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Dim_Date]')AND type in(N'U'))
Drop table [dbo].[Dim_Date]
GO
CREATE TABLE [dbo].[Dim_Date](
    DateKey [int] NOT NULL,
    [TheDate] [datetime] NULL, --DateTime格式的日期
    [TheDateName] [nvarchar](10)NULL, --日期名称
    [TheYear] [smallint] NULL,--年份
    [TheYearName] [nvarchar](10)NULL,--年份名称
    [TheMonth] [smallint] NULL,--月份
    [TheMonthName] [nvarchar](10)NULL,--月份名称
    [TheDay] [smallint] NULL,--日
    [TheDayName] [nvarchar](10)NULL,--日的名称
    [TheQuarter] [smallint] NULL,--季度
    [TheQuarterName] [nvarchar](10)NULL,--季度名称
    [TheWeek] [smallint] NULL,--星期
    [TheWeekName] [nvarchar](10)NULL,--星期名称  
    [Vacation_Mark] [smallint] NULL,--节假日标志
    [TheWW] [smallint] NULL,--周
    [TheWWName] [nvarchar](20) NULL --周名称
)ON [PRIMARY]


DECLARE
@DateKey int,
@TheDate datetime,
@TheDateName nvarchar(10),                    
@TheYear smallint,    
@TheYearName nvarchar(10),
@TheMonth smallint,
@TheMonthName nvarchar(10),
@TheDay smallint,
@TheDayName nvarchar(10),
@TheQuarter smallint,
@TheQuarterName nvarchar(10),
@TheWeek smallint,                    
@TheWeekName nvarchar(10),
@Vacation_Mark smallint,
@TheWW smallint,
@TheWWName nvarchar(20),
@dDate DATETIME,--存储起始日期和结束日期
@adddays smallint--存储日期增量


SELECT @adddays = 1 --日期增量
--_select @dDate = '1/1/2000'--当前日期
--WHILE @dDate <= '12/31/2010'--结束日期
SELECT @dDate = '1/1/2012' --取当前系统时间维度表最大日期
WHILE @dDate <= '12/31/2012'--结束日期:当前日期往后顺延5年，可以根据实际需求设置时长
BEGIN

    select @DateKey=cast((left(convert(nvarchar,@dDate,23),4)+substring(convert(nvarchar,@dDate,23),6,2)+
substring(convert(nvarchar,@dDate,23),9,2))as int)
    SELECT @TheDate = @dDate
    SELECT @TheDateName = REPLACE(CONVERT(nvarchar(20),@dDate,111),'/','-')
    SELECT @TheYear = DATENAME(yy, @dDate)
    SELECT @TheYearName = CAST(@TheYear as nvarchar)+'年'
    SELECT @TheMonth = DATENAME(mm, @dDate)
    SELECT @TheMonthName =CAST(@TheMonth as nvarchar)+'月'
    SELECT @TheDay = DATENAME(dd, @dDate)
    SELECT @TheDayName = CAST(@TheDay as nvarchar)+'日'
    SELECT @TheQuarter = DATENAME(Quarter, @dDate)
    SELECT @TheQuarterName = '第' + CAST(DATENAME(Quarter, @dDate)as varchar(1))+'季度'
    SELECT @TheWeek = DATEPART(dw, @dDate)
    SELECT @TheWeekName = DATENAME(dw,@dDate)
    SELECT @Vacation_Mark = CASE WHEN(@TheWeek = 1 OR @TheWeek = 7)THEN 1 ELSE 0 END
    select @TheWW= DATEPART(wk, @dDate)
    select @TheWWName='第'+CAST(DATEPART(wk, @dDate)as varchar(2))+'周'  

INSERT INTO Dim_Date(DateKey,TheDate,TheDateName,TheYear,TheYearName,TheMonth,TheMonthName,TheDay,
                        TheDayName,TheQuarter,TheQuarterName,TheWeek,TheWeekName,Vacation_Mark,TheWW,TheWWName)VALUES
(@DateKey,@TheDate, @TheDateName,@TheYear,@TheYearName,@TheMonth,@TheMonthName,@TheDay,@TheDayName,@TheQuarter,
    @TheQuarterName,@TheWeek,@TheWeekName,@Vacation_Mark,@TheWW,@TheWWName)
   SELECT @dDate = @dDate + @adddays
END
GO

2）时刻维度[Dim_Time]

IF EXISTS(select* FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Dim_Time]')AND type in(N'U'))
Drop table [dbo].[Dim_Time]
CREATE TABLE [dbo].[Dim_Time](
    [TimeKey]  int IDENTITY(1,1)NOT NULL,
    [TheHour]  smallint NULL, --小时
    [TheHourName] nvarchar(5) NULL,--小时名称
    [HalfHour] smallint NULL, --半小时
    [HalfHourName] nvarchar(10)NULL, --半小时名称
    [Min] smallint NULL, --分钟
    [minName] nvarchar(10)NULL --分钟名称
)ON [PRIMARY]
DECLARE
@dHour smallint,
@addhours smallint,
@chour nvarchar(5),
@dhhour smallint,
@hhourname nvarchar(10),
@dMin smallint,
@dMinName nvarchar(10)
select @dHour = 0       --起始小时
select @dhhour = 1      --起始半小时
select @dmin = 0        --起始分钟
WHILE  @dHour <= 23
BEGIN
   WHILE @dmin <=59
         BEGIN
          select @dhhour =
        CASE
        WHEN @dMin >=0  and @dMin <=29  THEN 1
        WHEN @dMin >=30 and @dMin <=59  THEN 2 END
          select @hhourname =
        CASE
        WHEN @dhhour =1  THEN '前半小时'
        WHEN @dhhour =2  THEN '后半小时' END
        select @dMinName = cast(@dhour as nvarchar)+':'+(case when len(@dmin)=1 then('0'+cast(@dmin as nvarchar))       
         else cast(@dmin as nvarchar)end)
         select @chour = cast(@dhour as nvarchar)+ ':00'
insert INTO Dim_Time(TheHour,TheHourName,HalfHour,HalfHourName,Min,MinName)VALUES
       (@dHour,@chour,@dhhour,@hhourname,@dMin,@dMinName)
        select @dMin = @dMin + 1
        END
select @dmin = 0
select @dHour = @dHour + 1
END
GO