MDX for Zero months in last 12 = Number of zero transacting months in the last 12 months rolling window - mdx

Question

I am working on MDx query to count the number ZERO txn for each product for last 12 months from today's date. Prepared MDX query for Adventure works fine but my 2nd query running on my Acutal cube working correctly.
Can you please help me out to rectify the query or any filter needed to get correct results like 1st sample query?
1st Sample Query on Adventure Works: (working correctly)
WITH Member [Measures].[Months With Zero Sales] AS
COUNT(
FILTER(
DESCENDANTS(
{[Date].[Calendar].[Month].&[2008]&[1].LAG(12):[Date].[Calendar].[Month].&[2008]&[1]}, [Date].[Calendar].[Month]) ,
[Measures].[Sales Amount] = 0 ) )
SELECT {[Measures].[Months With Zero Sales]} ON 0,
[Product].[Product Model Lines].[Product Line].Members on 1
FROM [Adventure Works];
Product Lines Months With Zero Sales]
----------- -----------------
Accessory 0
Componenets 0
Mountain 0
Road 0
Touring 6
2nd Query on my Cube:
WITH Member [Measures].[Zero Months in last 12] AS
COUNT(
FILTER(
DESCENDANTS(
{[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1].LAG(12):
[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1]},
[Settlement Date].[Calendar].[Settlement Calendar Month]),
[Measures].[Transaction Count] = 0 ) )
SELECT {[Measures].[Transaction Count] ,[Measures].[Zero Months in last 12]} ON 0,
[Terminal].[terminal ID].members on 1
FROM [cubetxn]
I'm expecting if non zero where "transaction count" is (null), even if there is transaction count not null, there could be chances to have one month with empty tuples.
Can you please correct my query or someone can give me sample query which should able to give me total zero month txn count for last 12 month of each product.
Terminal ID Transaction Count Zero Months in last 12
---------- ----------------- -------------------------
All Terminals 504,112,053 0
Q1001 138,832 0
Q1002 (null) 0
Q1003 88,800 0
Q1004 (null) 0

Answer 1

First comment is that this is a quicker pattern to use when doing a count/filter:
WITH
MEMBER [Measures].[Months With Zero Sales] AS
Sum
(
Descendants
(
{
[Date].[Calendar].[Month].&[2008]&[1].Lag(12)
:
[Date].[Calendar].[Month].&[2008]&[1]
}
,[Date].[Calendar].[Month]
)
,IIF
(
[Measures].[Sales Amount] = 0
,1
,null
)
)
SELECT
{[Measures].[Months With Zero Sales]} ON 0
,[Product].[Product Model Lines].[Product Line].MEMBERS ON 1
FROM [Adventure Works];
Based on this more efficient approach does the following work?
WITH
MEMBER [Measures].[Zero Months in last 12] AS
Sum
(
Descendants
(
{
[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1].Lag(12)
:
[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1]
}
,[Settlement Date].[Calendar].[Settlement Calendar Month]
)
,IIF
(
[Measures].[Transaction Count] = 0
,1
,0
)
)
SELECT
{
[Measures].[Transaction Count]
,[Measures].[Zero Months in last 12]
} ON 0
,[Terminal].[terminal ID].MEMBERS ON 1
FROM [cubetxn];
If there is still a problem then why not reconstruct your script so you can manually check what to expect. So for the AdvWrks script I'd run this so that I could actually confirm that the 6 is correct:
SELECT
{[Measures].[Sales Amount]} ON 0
,
Descendants
(
{
[Date].[Calendar].[Month].&[2008]&[1].Lag(12)
:
[Date].[Calendar].[Month].&[2008]&[1]
}
,[Date].[Calendar].[Month]
)
*
[Product].[Product Model Lines].[Product Line].MEMBERS ON 1
FROM [Adventure Works];
So against your cube what does the following return?
SELECT
{[Measures].[Transaction Count]} ON 0
,
Descendants
(
{
[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1].Lag(12)
:
[Settlement Date].[Calendar].[Settlement Calendar Month].&[2014]&[1]
}
,[Settlement Date].[Calendar].[Settlement Calendar Month]
)
*
[Terminal].[terminal ID].MEMBERS ON 1
FROM [cubetxn];

Answer 2

//Total Transactions count Weekend Sunday (i’ve date dimesion which holds day_in_week=’Sun’ for respective dates)
WITH SET AllTranSundays as
EXISTS(DATE.DATE.DATE.MEMBERS, DATE.DATE.day_in_week.&[Sun], "Sales")
//Count of all sundays which had transactions.
MEMBER Measures.CntAllTranSundays AS
COUNT(AllTranSundays)
//YTD Days = Count of days within calendar year to date
MEMBER Measures.CntDaysYTD as
COUNT(DESCENDANTS(ANCESTOR([DATE].[date].CURRENTMEMBER,
3), 3).item(0).item(0)
: [DATE].[date].CURRENTMEMBER)
//YTD Transactions = Transaction count year to date
MEMBER Measures.CntTranYTD as
COUNT(
EXISTS(
{DESCENDANTS(ANCESTOR([DATE].[date].CURRENTMEMBER,
3), 3).item(0).item(0)
: [DATE].[date].CURRENTMEMBER}, , "Sales"
)
//Zero months in last 12 = Number of zero transacting months in the last 12 months rolling window
MEMBER Measures.CntZeroTransactingMonths as
COUNT(
{ANCESTOR([DATE].[date].CURRENTMEMBER, 1).ITEM(0).LAG(12) : ANCESTOR([DATE].[date].CURRENTMEMBER, 1).ITEM(0)}
-
EXISTS({ANCESTOR([DATE].[date].CURRENTMEMBER, 1).ITEM(0).LAG(12) : ANCESTOR([DATE].[date].CURRENTMEMBER, 1).ITEM(0)}
, ,
"Sales")
)
//Consecutive zero months = Number of consecutive zero transacting months in last 12 months rolling window
Question Do you want a count of instances when consecutive months had zero transactions.
Or do you want a count of number of months which had consecutively no transactions?
What I am trying to say is say Jan, March, June, July, August, October, November had no transactions in the rolling last 12 months
As per case 1: the answer should be 2
As per case 2: the answer should be 5.
Will update my answer as per your clarification.
SELECT
{Measures.CntAllTranSundays, Measures.CntDaysYTD, Measures.CntTranYTD, Measures.CntZeroTransactingMonths} ON 0
FROM [YourCube]
where
[date].[date].[date].&[02/28/2015]