Set of Days in past 6 equivalent MTDs - ssas

Question

Imagine today it is the 22nd June 2010 (I've used this date as AdvWrks cube is old)
I would like to find the set of days that make up this month i.e. 1st June - 22nd June plus the days in the previous 5 equivalent months to date.
So these days would make up the set:
(1st Jan 2010 - 22nd Jan 2010) +
(1st Feb 2010 - 22nd Feb 2010) +
(1st Mar 2010 - 22nd Mar 2010) +
(1st Apr 2010 - 22nd Apr 2010) +
(1st May 2010 - 22nd May 2010) +
(1st Jun 2010 - 22nd Jun 2010)
The following gives me this set of 132 days:
WITH
SET [Days in Current Month] AS
[Date].[Calendar].[Date].&[20100601]:[Date].[Calendar].[Date].&[20100622]
SET [Mths in Past 6 Mths] AS
Tail
(
[Date].[Calendar].[Month].MEMBERS
,6
)
SET [Prev Equiv MTDs] AS
Generate
(
[Mths in Past 6 Mths]
,Head
(
Descendants
(
[Mths in Past 6 Mths].CurrentMember
,[Date].[Calendar].[Date]
,SELF
)
,[Days in Current Month].Count
)
)
SELECT
{} ON 0
,[Prev Equiv MTDs] ON 1
FROM [Adventure Works];
Is it possible to find this set of days without using the Generate function?

Answer 1

Here is one way:
WITH SET FirstDateOfMonth AS [Date].[Calendar].[Date].&[20100622].Parent.FirstChild
SET LastDayOfMonth AS [Date].[Calendar].[Date].&[20100622]
SELECT {} ON 0,
//CurrentMonth
{
FirstDateOfMonth.ITEM(0)
:
LastDayOfMonth.ITEM(0)
}
+
//-1 month
{
ParallelPeriod(
[Date].[Calendar].[Month],
1,
FirstDateOfMonth.ITEM(0)
)
:
ParallelPeriod(
[Date].[Calendar].[Month],
1,
LastDayOfMonth.ITEM(0)
)
}
+
//-2 month
{
ParallelPeriod(
[Date].[Calendar].[Month],
2,
FirstDateOfMonth.ITEM(0)
)
:
ParallelPeriod(
[Date].[Calendar].[Month],
2,
LastDayOfMonth.ITEM(0)
)
}
+
//-3 month
{
ParallelPeriod(
[Date].[Calendar].[Month],
3,
FirstDateOfMonth.ITEM(0)
)
:
ParallelPeriod(
[Date].[Calendar].[Month],
3,
LastDayOfMonth.ITEM(0)
)
}
+
//-4 month
{
ParallelPeriod(
[Date].[Calendar].[Month],
4,
FirstDateOfMonth.ITEM(0)
)
:
ParallelPeriod(
[Date].[Calendar].[Month],
4,
LastDayOfMonth.ITEM(0)
)
}
+
//-5 month
{
ParallelPeriod(
[Date].[Calendar].[Month],
5,
FirstDateOfMonth.ITEM(0)
)
:
ParallelPeriod(
[Date].[Calendar].[Month],
5,
LastDayOfMonth.ITEM(0)
)
}
ON 1
FROM [Adventure Works]
And here is one more:
SELECT
{
[Date].[Calendar].[Date].&[20100622].PARENT.FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT
)
}
+
{
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(1).FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(1)
)
}
+
{
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(2).FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(2)
)
}
+
{
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(3).FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(3)
)
}
+
{
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(4).FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(4)
)
}
+
{
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(5).FirstChild
:
COUSIN
(
[Date].[Calendar].[Date].&[20100622],
[Date].[Calendar].[Date].&[20100622].PARENT.LAG(5)
)
}
ON 1,
{} ON 0
FROM [Adventure Works]
And one more...
WITH SET FirstDateOfMonth AS [Date].[Calendar].[Date].&[20100622].Parent.FirstChild
SET LastDayOfMonth AS [Date].[Calendar].[Date].&[20100622]
MEMBER Measures.PositionOfDate AS {FirstDateOfMonth.ITEM(0):LastDayOfMonth.ITEM(0)}.COUNT
SET Dates AS
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.ITEM(0).CHILDREN,
Measures.PositionOfDate
)
+
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.LAG(1).ITEM(0).CHILDREN,
Measures.PositionOfDate
)
+
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.LAG(2).ITEM(0).CHILDREN,
Measures.PositionOfDate
)
+
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.LAG(3).ITEM(0).CHILDREN,
Measures.PositionOfDate
)
+
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.LAG(4).ITEM(0).CHILDREN,
Measures.PositionOfDate
)
+
HEAD(
[Date].[Calendar].[Date].&[20100622].Parent.LAG(5).ITEM(0).CHILDREN,
Measures.PositionOfDate
)
SELECT Dates ON 0,
{} ON 1
FROM [Adventure Works]
And this way too:
WITH SET FirstDateOfSelectedMonth AS [Date].[Calendar].[Date].&[20100622].Parent.FirstChild
SET SelectedDate AS [Date].[Calendar].[Date].&[20100622]
MEMBER Measures.PositionOfDate AS {FirstDateOfSelectedMonth.ITEM(0):SelectedDate.ITEM(0)}.COUNT
SELECT
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0).PARENT.lag(5).FirstChild.LEAD(Measures.PositionOfDate - 1)
)
+
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0).PARENT.lag(4).FirstChild.LEAD(Measures.PositionOfDate - 1)
)
+
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0).PARENT.lag(3).FirstChild.LEAD(Measures.PositionOfDate - 1)
)
+
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0).PARENT.lag(2).FirstChild.LEAD(Measures.PositionOfDate - 1)
)
+
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0).PARENT.lag(1).FirstChild.LEAD(Measures.PositionOfDate - 1)
)
+
PeriodsToDate
(
[Date].[Calendar].[Month],
SelectedDate.ITEM(0)
)
ON 1,
{} ON 0
FROM [Adventure Works]
EDIT
Slow code with non-repeating blocks:
WITH SET FirstDateOfSelectedMonth AS [Date].[Calendar].[Date].&[20100601].Parent.FirstChild
SET SelectedDate AS [Date].[Calendar].[Date].&[20100601]
MEMBER Measures.PositionOfDate AS {FirstDateOfSelectedMonth.ITEM(0):SelectedDate.ITEM(0)}.COUNT
MEMBER Measures.PositionOfCurrentDate AS
([Date].[Calendar].currentmember.Parent.FirstChild:[Date].[Calendar].currentmember).COUNT
SELECT
{
[Date].[Calendar].[Date].&[20100601].Parent.LAG(5).FirstChild.ITEM(0)
:
[Date].[Calendar].[Date].&[20100601]
}
HAVING Measures.PositionOfCurrentDate <= Measures.PositionOfDate
ON 1,
{} ON 0
FROM [Adventure Works]