MDX Start and End Time per transaction - ssas

Question

I hope you can help i have tried so many way to try get this right with no luck. I am trying to get out the player account number the date and start and end date time and maybe calculate the play duration between the start and end times.
I would like the output to look something like this.
PlayerAccount | GamingDate | StartTime | EndTime | PlayDuration | ActualWin
I always seem to return the start and end time for the whole day and not Per account.
WITH
SET [MySet] AS
[Customer].[Player Account Number].Children*
Head
(
NonEmpty
(
[Start Time].[Hour].Children
,[Measures].[Actual Win]
)
,1
)*
Tail
(
NonEmpty
(
[End Time].[Hour].Children
,[Measures].[Actual Win]
)
,1
)
SELECT
{[Measures].[Actual Win]} ON 0
,{[MySet]} ON 1
FROM
(
SELECT
[Customer].[Player Account Number].&[1040002184]
:
[Customer].[Player Account Number].&[1040002198] ON 0
FROM Ratings
)
WHERE
{[Gaming Date].[Full Date].&[20150101]};

Answer 1

Usually first date and last date would be measures. If you only want results for those two player then use the WHERE clause rather than a sub-select:
WITH
MEMBER [Measures].[fDate] AS
Head
(
NonEmpty
(
[Start Time].[Hour].MEMBERS
,[Measures].[Actual Win]
)
).Item(0).Item(0).Member_Caption
MEMBER [Measures].[lDate] AS
Tail
(
NonEmpty
(
[End Time].[Hour].MEMBERS
,[Measures].[Actual Win]
)
).Item(0).Item(0).Member_Caption
SELECT
{
[Measures].[fDate]
,[Measures].[lDate]
,[Measures].[Actual Win]
} ON 0
,{[Customer].[Player Account Number].Children} ON 1
FROM Ratings
WHERE
([Gaming Date].[Full Date].&[20150101],
{ [Customer].[Player Account Number].&[1040002184]
,[Customer].[Player Account Number].&[1040002198]});
This is a working AdvWrks script which does the sort of thing you're trying to achieve:
WITH
MEMBER [Measures].[firstDate] AS
Head
(
NonEmpty
(
[Date].[Date].[Date].MEMBERS
,[Measures].[Internet Sales Amount]
)
).Item(0).Item(0).Member_Caption
MEMBER [Measures].[lastDate] AS
Tail
(
NonEmpty
(
[Date].[Date].[Date].MEMBERS
,[Measures].[Internet Sales Amount]
)
).Item(0).Item(0).Member_Caption
SELECT
{
[Measures].[Internet Sales Amount]
,[Measures].[firstDate]
,[Measures].[lastDate]
} ON 0
,NON EMPTY {[Promotion].[Promotion].MEMBERS} ON 1
FROM [Adventure Works];
If you'd rather pull back a member instead of using Measures I think the GENERATE function will work like this AdvWrks example:
WITH
SET [aSet] AS
Generate
(
[Promotion].[Promotion].MEMBERS
,
[Promotion].[Promotion].CurrentMember
*
Head
(
NonEmpty
(
[Date].[Date].[Date].MEMBERS
,[Measures].[Internet Sales Amount]
)
)
)
SELECT
{[Measures].[Internet Sales Amount]} ON 0
,NON EMPTY
{[aSet]} ON 1
FROM [Adventure Works];

Answer 2

Thanks a million whytheq it seems like that .Item(0).Item(0).Member_Caption made all the difference the results seem to be come out right now. The final solution looks like this now..
with set [MySet]
as
[Casino Hierarchy].[Casino Key].children *
[Gaming Date].[Date].currentmember *
[Customer].[Player Account Number].children *
[Start Time].[Hour].children
member [measures].[Mindate]
as
HEAD(nonempty([End Time].[Hour].children,[Measures].[Actual Win]),1).Item(0).Item(0).Member_Caption
member [measures].[Maxdate]
as
TAIL(nonempty([Start Time].[Hour].children,[Measures].[Actual Win]),1).Item(0).Item(0).Member_Caption
select non empty
{
[Measures].[Actual Win],[measures].[Mindate],[measures].[Maxdate]
} on 0, non empty
{
[Customer].[Player Account Number].children
} on 1
from
(
select ([Customer].[Player Account Number].&[1040002184]:[Customer].[Player Account Number].&[1040002198]) on 0 from Ratings
)
where
{
[Gaming Date].[Full Date].&[20150101]
}

Answer 3

You are having a static set(which always return the same members). Use the EXISTING keyword to evaluate the Start and end time in the current context.
with member [Measures].[StartDate] as
EXISTING
HEAD(
nonempty(
[Start Time].[Hour].Children,[Measures].[Actual Win]
) ,1
).ITEM(0).ITEM(0).MEMBERVALUE
member [Measures].[EndDate] as
EXISTING
TAIL(
nonempty(
[End Time].[Hour].children,[Measures].[Actual Win]
) ,1
).ITEM(0).ITEM(0).MEMBERVALUE
select
{
[Measures].[Actual Win],
[Measures].[StartDate],
[Measures].[EndDate]
} on 0,
[Customer].[Player Account Number].children on 1
from
(
select (
[Customer].[Player Account Number].&[1040002184]:
[Customer].[Player Account Number].&[1040002198]
) on 0
from Ratings
)
where {[Gaming Date].[Full Date].&[20150101]}
Have rearranged the [Customer].[Player Account Number] so that dates are evaluated in the context of each player account. Hope that's fine!
Edit.
A simplified AdWrks version of this approach is as follows: still not quite working:
WITH
SET [aSet] AS
(EXISTING
Head
(
NonEmpty
(
[Date].[Date].[Date].MEMBERS
,[Measures].[Internet Sales Amount]
)
))
SELECT
{[Measures].[Internet Sales Amount]} ON 0
,NON EMPTY
{[Promotion].[Promotion].MEMBERS * [aSet]} ON 1
FROM [Adventure Works];