SQL Server 生成日历表

   今天做商城订单某时间段的销售趋势图，订单中在该日期范围内可能没有改天的记录，可以使用一个日历表来做关联实现。

 

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   <   '12/31/2004 '     --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 
GO 


select   *   from   time_dimension

   将查询结果与该表某范围的数据做一次连接即可。