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DECLARE @BeginDate DATE;

SELECT @BeginDate = '2018-1-1';
WHILE @BeginDate <= '2021-12-31'
BEGIN
INSERT INTO Dim_Date
SELECT Cast(CONVERT(VARCHAR(10), @BeginDate, 112) AS INT) AS DateKey,
       Year(@BeginDate)                                   AS Year,
       Datepart(QUARTER, @BeginDate)                      AS Quarter,
       CASE
         WHEN Datepart(QUARTER, @BeginDate) = 1 THEN '第一季度'
         WHEN Datepart(QUARTER, @BeginDate) = 2 THEN '第二季度'
         WHEN Datepart(QUARTER, @BeginDate) = 3 THEN '第三季度'
         ELSE '第四季度'
       END                                                AS QuarterCN,
       Month(@BeginDate)                                  AS Month,
       CASE
         WHEN Month(@BeginDate) = 1 THEN '一月'
         WHEN Month(@BeginDate) = 2 THEN '二月'
         WHEN Month(@BeginDate) = 3 THEN '三月'
         WHEN Month(@BeginDate) = 4 THEN '四月'
         WHEN Month(@BeginDate) = 5 THEN '五月'
         WHEN Month(@BeginDate) = 6 THEN '六月'
         WHEN Month(@BeginDate) = 7 THEN '七月'
         WHEN Month(@BeginDate) = 8 THEN '八月'
         WHEN Month(@BeginDate) = 9 THEN '九月'
         WHEN Month(@BeginDate) = 10 THEN '10月'
         WHEN Month(@BeginDate) = 11 THEN '11月'
         ELSE '12月'
       END   
                                                    AS MonthCN,
       CASE
         WHEN Datepart(DAY, @BeginDate) <= 10 THEN 1
         WHEN Datepart(DAY, @BeginDate) > 20 THEN 3
         ELSE 2
       END                                                AS Ten,
          CASE
         WHEN Datepart(DAY, @BeginDate) <= 10 THEN '上旬'
         WHEN Datepart(DAY, @BeginDate) > 20 THEN '下旬'
         ELSE '中旬'
       END                                                AS TenCN,
       Datepart(WEEK, @BeginDate) AS Week,
       DATENAME(WeekDay, @BeginDate) AS WeekDay,
       Day(@BeginDate) AS Day,
       CONVERT(VARCHAR(10),@BeginDate,120) AS Date
    SET @BeginDate = DATEADD(DAY,1,@BeginDate);     
 
  END;