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Find prevoius date with data

Posted on 2011-03-02
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Last Modified: 2013-11-16
Folks,

I am trying to create what seems to be a pretty simple calculated member, which will go back (from my current date) and find the previous date with any data entered (some of the dates have no info entered).  I am using recursion as follows:

with 
	member [Date].[Calendar].[BeforeCurrentWithData] as 
		iif( 
			([Date].[Calendar].currentmember.prevmember, [Measures].[Sales]) <> 0, 
			 [Date].[Calendar].currentmember.prevmember, 
			 [Date].[Calendar].[BeforeCurrentWithData]
		  )
select 
	{[Date].[Calendar].[BeforeCurrentWithData]} on columns,
	[Date].[Calendar2].[Date].members on rows
from [MyCube]
;

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Question by:ISALRW
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2 Comments
 
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Assisted Solution

by:itcouple
itcouple earned 100 total points
ID: 35025034
Hi

The way I would do that. I would identify current date (I use VBA MDX functions) and filter for non empty based on measure group and take the first one using tail function.

There might be a better way of doing that. Maybe some last non empty but I'm sure.

Hope that gives you more options to experiment with
Regards
Emil

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LVL 9

Accepted Solution

by:
Hwkranger earned 100 total points
ID: 35307492
You can use LAG or PARRALLEL PERIOD  take your pick.

http://msdn.microsoft.com/en-us/library/ms144866.aspx
http://msdn.microsoft.com/en-us/library/ms144866.aspx

See below for a example, I use both Lag and ParallelPeriod:
CREATE MEMBER CURRENTCUBE.[MEASURES].[Closed Relationship - STLY (Complete)]
 AS SUM(
	FILTER
	(EXISTING([Geography].[Agency].[Agency]),
	[Geography].[Import Start Date].CURRENTMEMBER.MEMBERVALUE <=
	HEAD(EXISTING [Date].[Date].[Date]).ITEM(0).ITEM(0).LAG(365).MEMBERVALUE
    ),
    Aggregate(Generate(EXISTING [Date].[Calendar].[Month].Members, {ParallelPeriod([Date].[Calendar].[Year], 1)}), [Measures].[Closed Relationship])
), 
FORMAT_STRING = "#,#;(#,#);0;\-", 
VISIBLE = 1;

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CREATE MEMBER CURRENTCUBE.[MEASURES].[Closed Relationship - STLY (Complete)]
 AS SUM(
	FILTER
	(EXISTING([Geography].[Agency].[Agency]),
	[Geography].[Import Start Date].CURRENTMEMBER.MEMBERVALUE <=
	HEAD(EXISTING [Date].[Date].[Date]).ITEM(0).ITEM(0).LAG(365).MEMBERVALUE
    ),
    Aggregate(Generate(EXISTING [Date].[Calendar].[Month].Members, {ParallelPeriod([Date].[Calendar].[Year], 1)}), [Measures].[Closed Relationship])
), 
FORMAT_STRING = "#,#;(#,#);0;\-", 
VISIBLE = 1;

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