SQL生成日历表

CREATE TABLE [dbo].[Calendar] ( [time_id] [int] IDENTITY (1, 1) NOT NULL primary key, [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 )

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 = '01/01/1989' --开始日期
WHILE @dDate < '12/31/2020' --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 Calendar(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


select * from Calendar