标签：style blog http ar color os sp on 数据
原文:《BI项目笔记》创建时间维度（1）SSAS Date 维度基本上在所有的 Cube 设计过程中都存在，很难见到没有时间维度的 OLAP 数据库。但是根据不同的项目需求， Date 维度的设计可能不大相同，所以在设计时间维度的时候需要搞清楚几个问题：
弄清楚上面这几方面的内容之后，心里大概知道时间属性的范围了，细到哪一种级别，由哪些特别的字段需要添加都在这个设计阶段完成。
一般情况下，可以自己写一个创建时间日期的数据仓库维度表，在这个脚本里面可以根据需要自定义一些特别的日期格式。
GO SET NOCOUNT ON IF OBJECT_ID(‘DimDate‘, ‘U‘) IS NOT NULL DROP TABLE DimDate GO CREATE TABLE DimDate ( DateKey INT PRIMARY KEY , FullDate DATE NOT NULL , [DateName] NVARCHAR(20) , DayNumberOfWeek TINYINT NOT NULL , DayNameOfWeek NVARCHAR(10) NOT NULL , DayNumberOfMonth TINYINT NOT NULL , DayNumberOfYear SMALLINT NOT NULL , IsWeekend BIT NOT NULL , IsLeapYear BIT 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 , FiscalQuarter TINYINT NOT NULL , FiscalSemester TINYINT NOT NULL , FiscalYear SMALLINT NOT NULL ) DECLARE @StartDate DATETIME DECLARE @EndDate DATETIME SELECT @StartDate = ‘2005-01-01‘ , @EndDate = ‘2014-12-31‘ WHILE ( @StartDate <= @EndDate ) BEGIN INSERT INTO DimDate ( DateKey , FullDate , [DateName] , DayNumberOfWeek , DayNameOfWeek , DayNumberOfMonth , DayNumberOfYear , IsWeekend , IsLeapYear , WeekNumberOfYear , EnglishMonthName , MonthNumberOfYear , CalendarQuarter , CalendarSemester , CalendarYear , FiscalQuarter , FiscalSemester , FiscalYear ) SELECT CAST(CONVERT(VARCHAR(8), @StartDate, 112) AS INT) AS DateKey , CONVERT(VARCHAR(10), @StartDate, 20) AS FullDate , 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] , CASE WHEN DATEPART(DW, @StartDate) IN ( 1, 7 ) THEN 1 ELSE 0 END AS IsWeekend , CASE WHEN ( ( YEAR(@StartDate) % 4 = 0 ) AND ( YEAR(@StartDate) % 100 != 0 OR YEAR(@StartDate) % 400 = 0 ) ) THEN 1 ELSE 0 END AS IsLeapYear , 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 , CASE WHEN DATEPART(MM, @StartDate) BETWEEN 1 AND 6 THEN DATEPART(QQ, @StartDate) + 2 ELSE DATEPART(QQ, @StartDate) - 2 END AS FiscalQuarter , CASE WHEN DATEPART(MM, @StartDate) BETWEEN 1 AND 6 THEN 2 ELSE 1 END AS FiscalSemester , CASE WHEN DATEPART(MM, @StartDate) BETWEEN 1 AND 6 THEN DATEPART(YY, @StartDate) ELSE DATEPART(YY, @StartDate) + 1 END AS FiscalYear SET @StartDate = @StartDate + 1 END GO
--------------------------------------------------------------------- -- 加上视图的作用是因为在实际的项目开发中，SSAS 的数据源视图所有的表对象 -- 应该都引用视图，这样当数据仓库中维度表或者事实表有小的改动就可以直接在 -- 视图中修改，而可以避免修改 SSAS 项目。 -- 这一点在 SSIS 开发中同样适用，所有在 SSIS 中配置的 SQL 语句都封装在存储 -- 过程中，表封装在视图中。逻辑的修改直接体现在存储过程中，而不会修改 SSIS。 ---------------------------------------------------------------------- IF OBJECT_ID(‘vDimDate‘, ‘V‘) IS NOT NULL DROP VIEW vDimDate GO CREATE VIEW vDimDate AS -- 可以根据需要实现一些计算列，这些计算列通常也可以在 SSAS 视图中添加。 SELECT DateKey AS ‘DateKey‘ , FullDate AS ‘FullDate‘ , [DateName] AS ‘DateName‘ , CONVERT(VARCHAR(2), DayNumberOfMonth) + ‘ ‘ + EnglishMonthName + ‘ ‘ + CONVERT(CHAR(4), CalendarYear) AS ‘FullDateName‘ , -- 1 July 2005 DayNumberOfWeek AS ‘DayNumberOfWeek‘ , DayNameOfWeek AS ‘DayNameOfWeek‘ , DayNumberOfMonth AS ‘DayNumberOfMonth‘ , DayNumberOfYear AS ‘DayNumberOfYear‘ , CASE WHEN IsWeekend = 1 THEN ‘Weekend‘ ELSE ‘Weekday‘ END AS ‘WeekdayWeekend‘ , IsLeapYear AS ‘IsLeapYear‘ , WeekNumberOfYear AS ‘WeekNumberOfYear‘ , EnglishMonthName AS ‘EnglishMonthName‘ , EnglishMonthName + ‘ ‘ + CONVERT(CHAR(4), CalendarYear) AS ‘MonthName‘ , -- July 2005 CalendarYear * 100 + MonthNumberOfYear AS ‘MonthKey‘ , -- 200507 MonthNumberOfYear AS ‘MonthNumberOfYear‘ , CalendarQuarter AS ‘CalendarQuarter‘ , CalendarSemester AS ‘CalendarSemester‘ , CalendarYear AS ‘CalendarYear‘ , CalendarYear * 100 + CalendarQuarter AS ‘CalendarQuarterKey‘ , -- 200503 ‘CY ‘ + CONVERT(CHAR(4), CalendarYear) AS ‘CalendarYearName‘ , -- CY 2005 ‘CY ‘ + CONVERT(CHAR(4), CalendarYear) + ‘ Qtr ‘ + CONVERT(CHAR(1), CalendarQuarter) AS ‘CalendarQuarterName‘ , -- CY 2005 Qtr 3 FiscalQuarter AS ‘FiscalQuarter‘ , FiscalSemester AS ‘FiscalSemester‘ , FiscalYear AS ‘FiscalYear‘ , FiscalYear * 100 + FiscalQuarter AS ‘FiscalQuarterKey‘ , -- 200601 ‘FY ‘ + CONVERT(CHAR(4), FiscalYear) AS ‘FiscalYearName‘ , -- FY 2006 ‘FY ‘ + CONVERT(CHAR(4), FiscalYear) + ‘ Qtr ‘ + CONVERT(CHAR(1), FiscalQuarter) AS ‘FiscalQuarterName‘ -- FY 2006 Qtr 1 FROM DimDate GO
数据处理：
--新增CheckDate字段 ALTER TABLE Tqc_Raw_Chemistry ADD CheckDate INT NULL ALTER TABLE T_TIR_QualityModelAdmin ADD CheckDate INT NULL ALTER TABLE T_QualMoisture_Middle ADD CheckDate INT NULL --将datetime转为int UPDATE Tqc_Raw_Chemistry SET CheckDate = CAST(REPLACE(CONVERT(CHAR(10), CheckTime, 120), ‘-‘, ‘‘) AS INT) UPDATE T_TIR_QualityModelAdmin SET CheckDate = CAST(REPLACE(CONVERT(CHAR(10), F_CheckDate, 120), ‘-‘, ‘‘) AS INT) UPDATE T_QualMoisture_Middle SET CheckDate = CAST(REPLACE(CONVERT(CHAR(10), T_Check_Date, 120), ‘-‘, ‘‘) AS INT) --删除CheckDate为NULL情况 DELETE FROM Tqc_Raw_Chemistry WHERE CheckDate IS NULL DELETE FROM T_TIR_QualityModelAdmin WHERE CheckDate IS NULL DELETE FROM T_QualMoisture_Middle WHERE CheckDate IS NULL
标签：style blog http ar color os sp on 数据
原文地址：http://www.cnblogs.com/lonelyxmas/p/4136517.html
