生成日期基础表

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--生成日期基础表
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-- 设置每周的起始天为周一
SET DATEFIRST 1
IF OBJECT_ID('Base_DateTimeInfo','U') IS NOT NULL
DROP TABLE Base_DateTimeInfo
GO

CREATE TABLE Base_DateTimeInfo
(
    DateKey INT PRIMARY KEY,
    DateTime DATE NOT NULL,
    [DateName] NVARCHAR(20),
    DayNumberOfWeek TINYINT NOT NULL,
    DayNameOfWeek NVARCHAR(10) NOT NULL,
    DayNumberOfMonth TINYINT NOT NULL,
    DayNumberOfYear SMALLINT NOT NULL, 
    WeekNumberOfYear TINYINT NOT NULL,
    EnglishMonthName NVARCHAR(10) NOT NULL,
    MonthNumberOfYear TINYINT NOT NULL,
    CalendarQuarter TINYINT NOT NULL,
    CalendarSemester TINYINT NOT NULL,
    CalendarYear SMALLINT NOT NULL 
)

DECLARE @StartDate DATETIME
DECLARE @EndDate DATETIME

SELECT @StartDate = '2015-01-01',
       @EndDate = '2035-12-31'

WHILE (@StartDate <= @EndDate)
BEGIN
    INSERT INTO Base_DateTimeInfo 
    (
        DateKey,
        DateTime,
        [DateName],
        DayNumberOfWeek,
        DayNameOfWeek,
        DayNumberOfMonth,
        DayNumberOfYear, 
        WeekNumberOfYear,
        EnglishMonthName, 
        MonthNumberOfYear,
        CalendarQuarter,
        CalendarSemester,
        CalendarYear 
    )
    SELECT CAST(CONVERT(VARCHAR(8),@StartDate,112) AS INT) AS DateKey,
           CONVERT(VARCHAR(10), @StartDate,20) AS DateTime,
           CONVERT(VARCHAR(20), @StartDate,106) AS [DateName],
           DATEPART(DW,@StartDate) AS DayNumberOfWeek,
           DATENAME(DW,@StartDate) AS DayNameOfWeek,
           DATENAME(DD,@StartDate) AS [DayOfMonth],
           DATENAME(DY,@StartDate) AS [DayOfYear],  
           DATEPART(WW,@StartDate) AS WeekNumberOfYear,
           DATENAME(MM,@StartDate) AS EnglishMonthName,
           DATEPART(MM,@StartDate) AS MonthNumberOfYear,
           DATEPART(QQ,@StartDate) AS CalendarQuarter,
           CASE WHEN DATEPART(MM,@StartDate) BETWEEN 1 AND 6
                    THEN 1
                ELSE 2
           END AS CalendarSemester,
           DATEPART(YY,@StartDate) AS CalendarYear 
            
    SET @StartDate = @StartDate + 1
END
GO