I am trying to use the lookup function to combine two SSAS outputs in a report where the dimensionality is the same between the 2 datasets.
For detail lines from the dataset, this is fine and works perfectly. However, my datasets also have sub totals from the SSAS queries. In my table I am using the Aggregate function to get the values in the sub totals correct (as the default SSRS method to use SUM is wrong!). However, I cannot get the lookup function to return results for the sub totals.
In the target data my results look like (the top 2 rows are the subtotals for the MDX query)
Attr1Attr2TheValue
------------------------
H1null 100
H2null 200
H1D1 50
H1D2 50
H2D3 200
If i do =Lookup(Fields!Attr1.Value, Fields!Attr1.Value, Fields!TheValue.Value, "TargetDataset")
the lookup statement returns 50 for matching on 'H1' when i really want 100. It seems like the subtotal rows are hidden somehow (presumably why you have to use aggregate).
Does anyone know how to get the out of the dataset using a lookup?
Ta for any help!