intersect and topcount and order function in MDX query - sql

Question

I use SQL Server 2008 R2 and i use SSRS and i use Adventure Work DataBase.
I write this MDX query for get 10 city that were in top ten in both years 2003 , 2004.
with
set [Best Cities in CY 2003/2004] as
intersect(
order(
topcount(
[Customer].[Customer Geography].[City],
10,
(
[Measures].[Internet Sales Amount],
[Date].[Calendar].[Calendar Year].[CY 2003]
)
),
[Measures].[Internet Sales Amount],
bdesc
),
order(
topcount(
[Customer].[Customer Geography].[City],
10,
(
[Measures].[Internet Sales Amount],
[Date].[Calendar].[Calendar Year].[CY 2004]
)
),
[Measures].[Internet Sales Amount],
bdesc
)
)
Select [Measures].[Internet Sales Amount] on columns,
[Best Cities in CY 2003/2004] on rows
From [Adventure Works]
Where
{
[Date].[Calendar].[Calendar Year].[CY 2003],
[Date].[Calendar].[Calendar Year].[CY 2004]
}
But i want get list of cities that internet sales has decreased by 35% compared to the previous year and cities among the top 10 cities in the same year as well.
How i can get this result?

Answer 1

You would use Filter for this:
with
set [Best Cities in CY 2003/2004] as
filter(
intersect(
topcount(
[Customer].[Customer Geography].[City],
10,
(
[Measures].[Internet Sales Amount],
[Date].[Calendar].[Calendar Year].[CY 2003]
)
),
topcount(
[Customer].[Customer Geography].[City],
10,
(
[Measures].[Internet Sales Amount],
[Date].[Calendar].[Calendar Year].[CY 2004]
)
)
),
([Measures].[Internet Sales Amount], [Date].[Calendar].[Calendar Year].[CY 2004])
/
([Measures].[Internet Sales Amount], [Date].[Calendar].[Calendar Year].[CY 2003])
- 1.0
< -0.35
)
Select [Measures].[Internet Sales Amount] on columns,
[Best Cities in CY 2003/2004] on rows
From [Adventure Works]
Where
{
[Date].[Calendar].[Calendar Year].[CY 2003],
[Date].[Calendar].[Calendar Year].[CY 2004]
}