私は倉庫用のカレンダーテーブルを作成しています。これをすべての日付フィールドの外部キーとして使用します。労働日対。感謝祭
以下に示すコードは、テーブルを作成し、それを設定します。私はメモリアルデー(5月最後の月曜日)と労働日(9月最初の月曜日)を見つける方法を見つけ出すことができました。
SET NOCOUNT ON
DROP Table dbo.Calendar
GO
Create Table dbo.Calendar
(
CalendarId Integer NOT NULL,
DateValue Date NOT NULL,
DayNumberOfWeek Integer NOT NULL,
NameOfDay VarChar (10) NOT NULL,
NameOfMonth VarChar (10) NOT NULL,
WeekOfYear Integer NOT NULL,
JulianDay Integer NOT NULL,
USAIsBankHoliday Bit NOT NULL,
USADayName VarChar (100) NULL,
)
ALTER TABLE dbo.Calendar ADD CONSTRAINT
DF_Calendar_USAIsBankHoliday DEFAULT 0 FOR USAIsBankHoliday
GO
ALTER TABLE dbo.Calendar ADD CONSTRAINT
DF_Calendar_USADayName DEFAULT '' FOR USADayName
GO
Declare @StartDate DateTime = '01/01/2000'
Declare @EndDate DateTime = '01/01/2020'
While @StartDate < @EndDate
Begin
INSERT INTO dbo.Calendar
(
CalendarId,
DateValue,
WeekOfYear,
DayNumberOfWeek,
NameOfDay,
NameOfMonth,
JulianDay
)
Values
(
YEAR (@StartDate) * 10000 + MONTH (@StartDate) * 100 + Day (@StartDate), --CalendarId
@StartDate, -- DateValue
DATEPART (ww, @StartDate), -- WeekOfYear
DATEPART (dw, @StartDate), -- DayNumberOfWeek
DATENAME (dw, @StartDate), -- NameOfDay
DATENAME (M, @StartDate), -- NameOfMonth
DATEPART (dy, @StartDate) -- JulianDay
)
Set @StartDate += 1
End
--=========================== Weekends
-- saturday and sunday
UPDATE dbo.Calendar SET USAIsBankHoliday = 1, USADayName += 'Weekend, ' WHERE DayNumberOfWeek IN (1, 7)
--=========================== Bank Holidays
-- new years day
UPDATE dbo.Calendar SET USAIsBankHoliday = 1, USADayName += 'New Year''s Day, ' WHERE (CalendarId % 2000) IN (101)
-- memorial day (last Monday in May)
UPDATE dbo.Calendar
SET USAIsBankHoliday = 1,
USADayName += 'Memorial Day, '
WHERE 1=1
AND CalendarId IN
(
SELECT MAX (CalendarId)
FROM dbo.Calendar
WHERE MONTH (DateValue) = 5
AND DATEPART (DW, DateValue)=2
GROUP BY YEAR (datevalue)
)
-- independence day
UPDATE dbo.Calendar SET USAIsBankHoliday = 1, USADayName += 'Independence Day, ' WHERE (CalendarId % 2000) IN (704)
-- labor day (first Monday in September)
UPDATE dbo.Calendar
SET USAIsBankHoliday = 1,
USADayName += 'Labor Day, '
WHERE 1=1
AND CalendarId IN
(
SELECT MIN (CalendarId)
FROM dbo.Calendar
WHERE MONTH (DateValue) = 9
AND DATEPART (DW, DateValue)=2
GROUP BY YEAR (datevalue)
)
-- thanksgiving day (fourth Thursday in November)
UPDATE dbo.Calendar
SET USAIsBankHoliday = 1,
USADayName += 'Thanksgiving Day, '
WHERE 1=1
AND CalendarId IN
(
SELECT Max (CalendarId)
FROM dbo.Calendar
WHERE MONTH (DateValue) = 11
AND DATEPART (DW, DateValue)=5
GROUP BY YEAR (datevalue)
)
-- christmas
UPDATE dbo.Calendar SET USAIsBankHoliday = 1, USADayName += 'Christmas Day, ' WHERE (CalendarId % 2000) IN (1225)
--=========================== Other named days
-- new years eve
UPDATE dbo.Calendar SET USADayName += 'New Year''s Eve, ' WHERE (CalendarId % 2000) IN (1231)
-- christmas eve
UPDATE dbo.Calendar SET USADayName += 'Christmas Eve, ' WHERE (CalendarId % 2000) IN (1224)
-- boxing day
UPDATE dbo.Calendar SET USADayName += 'Boxing Day, ' WHERE (CalendarId % 2000) IN (1226)
--=========================== Remove trailing comma
UPDATE dbo.Calendar SET USADayName = SubString (USADayName, 1, LEN (USADayName) -1) WHERE LEN (USADayName) > 2
SELECT * FROM dbo.Calendar
私は感謝祭の日(木曜日の最後の完全な週の11月)に困惑しています。
編集:ジョン・ザウアーによってコメントに基づいて 修正
感謝祭は11月の第四木曜日です。しかし、数年前からチェックすると、私は(それは私が感謝祭の日考え出すに困惑していますまた、11月
お待ちください。七面鳥を幸せにします。 – balpha
ラマダンの始まりも挑戦的です。 – Smandoli
そして、良い金曜日と復活祭があります。 – RobH