Subtracting two fact values of today and Previous day Measures.

Hi,
I am having an Requirement in which i need to show the values comong form two fact Tables.
Consider fact1 will be always having today's date ie(one day record) which is having few Measure Columns.
Fact2 will be always having previous day date(ie Previous day Record) which is also having some measure Columns.
Now my Requirement is i need to display fact1.Measure1-Fact2 Measure1 along with today's date.The problem we are facing is that because of the day level granularity we are not geeting previous day record ie(Fact2.Measure1) in the output.I tried union Request because of same granularity problem we are getting null value.
Kindly help me how to resolve this issue.
Regards,
yams

Can you check this link once you may get some idea if not can you share example with data?
Re: Second row data - First row data of other column?

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http://108obiee.blogspot.com/2009/08/joining-two-fact-tables-with-different.html
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Subtracting two fact values of today and Previous day Measures.

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