Raj*_*ore 13 sql-server data-warehouse
对于我的数据仓库,我正在创建一个日历表,如下所示:
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)-2
FROM dbo.Calendar
WHERE MONTH (DateValue) = 11
AND DATEPART (DW, DateValue)=7
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)
-- black friday (day after thanksgiving day)
UPDATE dbo.Calendar SET USADayName += 'Black Friday, ' WHERE CalendarId IN (SELECT CalendarId+1 From dbo.Calendar Where USADayName like '%Thanksgiving%')
-- 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
这是此命令的输出
http://img35.imageshack.us/img35/3899/calendartable.png
我已经看到数据架构师以各种方式实现了类似的结构.
我的问题是:我可以将哪些其他数据仓库/维度样式有用的信息添加到此表结构中？
小智 10
这是我在日历维度中列出的可能列:
我创建了交互式电子表格,您可以在其中为PostgreSQL数据库创建自己的时间维度.
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