MDX using except doesn't work - sql

Question

I have the following Problem:
Select
{
[Measures].[PerformanceTotalYtd]
} on columns,
Non Empty{
Except(([Desk].[DeskName].[Trade].Members,[Time].[Year-Month-Day].[Day].&[2012]&[1]&[10]),([Desk].[DeskName].[Trade].Members,[Time].[Year-Month-Day].[Day].&[2012]&[1]&[09]))
} on rows
from [Cube]
where ([Entity].[Entity].&[9], [Audience].[View].&[GOD])
It exists a Dimension with the Name Desk. This Dimension has a Hierarchy with the name DeskName. The lowest Level ist Trade.
Desk: -Total -Segment -BusinessArea -Department -4th Level Portfolio -Desk -Trade
With the Query showing below, i want to show all Trades, that have the Measure "PerformanceTotalYtd" != NULL on the Date of 2012/01/10 except the Trades with the Measure "PerformanceTotalYtd" != NULL on the Date of 2012/01/09 !
Example:
Trades with Measure PerformanceTotalYtd on the 2012/01/10:
ABC 12,99
DEF 3,22
GHI 55,60
Trades with Measure PerformanceTotalYtd on the 2012/01/09:
ABC 80,00
DEF 8,78
I want the following Result because the Trade "GHI" doesn't exists on the 2012/01/09 and is new:
GHI 55,60
My Query showing below have this result:
ABC 12,99
DEF 3,22
GHI 55,60
It doesn't delete the existing Trades from the 2012/01/09.
I have a Solution in SQL but want to make it in MDX:
SELECT DD.Code, Sum(PerformanceTotalYtd) as TOTAL
FROM [Reporting_DB].[Star].[Fact_PerformanceTotal] FIS
inner join Star.Dimension_Desk DD on FIS.DeskID = DD.DeskID
WHERE FIS.TimeID = 20120110 and FIS.EntityID = 9 AND DD.Code not in ( SELECT DD.Code
FROM [Reporting_DB_HRE].[Star].[Fact_PerformanceTotal] FIS inner join Star.Dimension_Desk DD on FIS.DeskID = DD.DeskID WHERE FIS.TimeID = 20120109 and FIS.EntityID = 9 group by DD.Code)group by DD.Code
Can anybody help me please? I can't find a solution.
Sorry for my bad english!
Alex

Answer 1

I have found a similar example in the Adventure Works cube:
The set {[Customer].[City].&[Bell Gardens]&[CA], [Customer].[City].&[Bellevue]&[WA], [Customer].[City].&[Bellflower]&[CA]} has 3 values for [Measures].[Internet Sales Amount] in [Date].[Calendar Year].&[2002], and only 2 values in [Date].[Calendar Year].&[2004]. So we need to show measure value for member in 2002 where measure value == null in 2004.
The next MDX query achieves the desired result:
with set S as '{[Customer].[City].&[Bell Gardens]&[CA], [Customer].[City].&[Bellevue]&[WA], [Customer].[City].&[Bellflower]&[CA]}'
select
[Measures].[Internet Sales Amount] on 0,
non empty { Filter(S, IsEmpty(([Date].[Calendar Year].&[2004], [Measures].[Internet Sales Amount]))) } on 1
from [Adventure Works]
where ([Date].[Calendar Year].&[2002])
I tried to modify your example accordingly, but can't test it. Here it is:
select
{ [Measures].[PerformanceTotalYtd] } on 0,
non empty { Filter([Desk].[DeskName].[Trade].Members, IsEmpty(([Time].[Year-Month-Day].[Day].&[2012]&[1]&[09], [Measures].[PerformanceTotalYtd]))) } on 1
from [Cube]
where ([Entity].[Entity].&[9], [Audience].[View].&[GOD], [Time].[Year-Month-Day].[Day].&[2012]&[1]&[10])
In short: use Filter instead of Except.

Answer 2

I have the Solution for my Problem. Following Query shows the same Result as the Query of Dmitry Polyanitsa! Have a nice Day guys!
with
set [Trades Today] as NonEmpty([Desk].[DeskName].[Trade].Members, ([Measures].[PerformanceTotalYtd], [Time].[Year-Month-Day].[Day].&[2012]&[1]&[10]))
set [Trades Yesterday] as NonEmpty([Desk].[DeskName].[Trade].Members, ([Measures].[PerformanceTotalYtd], [Time].[Year-Month-Day].[Day].&[2012]&[1]&[9]))
set [Trades Difference] as Except([Trades Today], [Trades Yesterday])
Select
{
[Measures].[PerformanceTotalYtd]
} on columns,
Non Empty{
[Trades Difference]
} on rows
from [Cube]
where ([Entity].[Entity].&[9], [Audience].[View].&[GOD])