SQL Server 2008 Analysis Services(OLAP) - 环比、同比

--- 同期比较 Cousin

登记日期不连续，存在空缺 ===>

登记日期维度：每月/每天都存在，尽管在事实表中不存在的“天”

Case

When IsEmpty

(

(

Cousin([Dim Djrq].[YearMonthDay].CurrentMember, [Dim Djrq].[YearMonthDay].CurrentMember.Parent.PrevMember),

[Measures].[Sfzh Distinct Count]

)

)

Then Null

Else (

( [Dim Djrq].[YearMonthDay].CurrentMember,[Measures].[Sfzh Distinct Count] )

-

( Cousin([Dim Djrq].[YearMonthDay].CurrentMember, [Dim Djrq].[YearMonthDay].CurrentMember.Parent.PrevMember),[Measures].[Sfzh Distinct Count] )

)

/

( Cousin([Dim Djrq].[YearMonthDay].CurrentMember, [Dim Djrq].[YearMonthDay].CurrentMember.Parent.PrevMember),[Measures].[Sfzh Distinct Count])

End

--- 同期比较 parallelperiod

--- 同期比较 Generate/DOWSet

With Member [Measures].[PrevWeekSales] as

([Measures].[Sales Amount],

Generate(

{[Date].[Date].CurrentMember,Exists([Date].[Date].[Date].Members,[Date].[Day of Week].CurrentMember) as DOWSet}.Item(0),

DOWSet.Item(Rank([Date].[Date].CurrentMember,DOWSet) - 2)).Item(0)

), FORMAT_STRING = "Currency"

select {[Measures].[Sales Amount], [Measures].[PrevWeekSales]} on 0,

{[Date].[Date].&[20010701]:[Date].[Date].&[20010714]} on 1

from [Adventure Works]

--- 环比

Case

When [Dim Djrq].[YearMonthDay].CurrentMember.Level.Ordinal = 0

Then Null

When IsEmpty

(

(

[Dim Djrq].[YearMonthDay].CurrentMember.PrevMember,

[Measures].[Sfzh Distinct Count]

)

)

Then Null

When IsEmpty

(

(

[Dim Djrq].[YearMonthDay].CurrentMember,

[Measures].[Sfzh Distinct Count]

)

)

Then Null

Else (

( [Dim Djrq].[YearMonthDay].CurrentMember,[Measures].[Sfzh Distinct Count] )

-

( [Dim Djrq].[YearMonthDay].CurrentMember.PrevMember,[Measures].[Sfzh Distinct Count] )

)

/

( [Dim Djrq].[YearMonthDay].CurrentMember.PrevMember,[Measures].[Sfzh Distinct Count])

End